| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
iommufd: Do not corrupt the pfn list when doing batch carry
If batch->end is 0 then setting npfns[0] before computing the new value of
pfns will fail to adjust the pfn and result in various page accounting
corruptions. It should be ordered after.
This seems to result in various kinds of page meta-data corruption related
failures:
WARNING: CPU: 1 PID: 527 at mm/gup.c:75 try_grab_folio+0x503/0x740
Modules linked in:
CPU: 1 PID: 527 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:try_grab_folio+0x503/0x740
Code: e3 01 48 89 de e8 6d c1 dd ff 48 85 db 0f 84 7c fe ff ff e8 4f bf dd ff 49 8d 47 ff 48 89 45 d0 e9 73 fe ff ff e8 3d bf dd ff <0f> 0b 31 db e9 d0 fc ff ff e8 2f bf dd ff 48 8b 5d c8 31 ff 48 89
RSP: 0018:ffffc90000f37908 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 00000000fffffc02 RCX: ffffffff81504c26
RDX: 0000000000000000 RSI: ffff88800d030000 RDI: 0000000000000002
RBP: ffffc90000f37948 R08: 000000000003ca24 R09: 0000000000000008
R10: 000000000003ca00 R11: 0000000000000023 R12: ffffea000035d540
R13: 0000000000000001 R14: 0000000000000000 R15: ffffea000035d540
FS: 00007fecbf659740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200011c3 CR3: 000000000ef66006 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
<TASK>
internal_get_user_pages_fast+0xd32/0x2200
pin_user_pages_fast+0x65/0x90
pfn_reader_user_pin+0x376/0x390
pfn_reader_next+0x14a/0x7b0
pfn_reader_first+0x140/0x1b0
iopt_area_fill_domain+0x74/0x210
iopt_table_add_domain+0x30e/0x6e0
iommufd_device_selftest_attach+0x7f/0x140
iommufd_test+0x10ff/0x16f0
iommufd_fops_ioctl+0x206/0x330
__x64_sys_ioctl+0x10e/0x160
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded sta
Avoid potential data corruption issues caused by uninitialized driver
private data structures. |
| In the Linux kernel, the following vulnerability has been resolved:
serial: 8250: Reinit port->pm on port specific driver unbind
When we unbind a serial port hardware specific 8250 driver, the generic
serial8250 driver takes over the port. After that we see an oops about 10
seconds later. This can produce the following at least on some TI SoCs:
Unhandled fault: imprecise external abort (0x1406)
Internal error: : 1406 [#1] SMP ARM
Turns out that we may still have the serial port hardware specific driver
port->pm in use, and serial8250_pm() tries to call it after the port
specific driver is gone:
serial8250_pm [8250_base] from uart_change_pm+0x54/0x8c [serial_base]
uart_change_pm [serial_base] from uart_hangup+0x154/0x198 [serial_base]
uart_hangup [serial_base] from __tty_hangup.part.0+0x328/0x37c
__tty_hangup.part.0 from disassociate_ctty+0x154/0x20c
disassociate_ctty from do_exit+0x744/0xaac
do_exit from do_group_exit+0x40/0x8c
do_group_exit from __wake_up_parent+0x0/0x1c
Let's fix the issue by calling serial8250_set_defaults() in
serial8250_unregister_port(). This will set the port back to using
the serial8250 default functions, and sets the port->pm to point to
serial8250_pm. |
| In the Linux kernel, the following vulnerability has been resolved:
ext4: fix WARNING in ext4_update_inline_data
Syzbot found the following issue:
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none.
fscrypt: AES-256-CTS-CBC using implementation "cts-cbc-aes-aesni"
fscrypt: AES-256-XTS using implementation "xts-aes-aesni"
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5071 at mm/page_alloc.c:5525 __alloc_pages+0x30a/0x560 mm/page_alloc.c:5525
Modules linked in:
CPU: 1 PID: 5071 Comm: syz-executor263 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__alloc_pages+0x30a/0x560 mm/page_alloc.c:5525
RSP: 0018:ffffc90003c2f1c0 EFLAGS: 00010246
RAX: ffffc90003c2f220 RBX: 0000000000000014 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90003c2f248
RBP: ffffc90003c2f2d8 R08: dffffc0000000000 R09: ffffc90003c2f220
R10: fffff52000785e49 R11: 1ffff92000785e44 R12: 0000000000040d40
R13: 1ffff92000785e40 R14: dffffc0000000000 R15: 1ffff92000785e3c
FS: 0000555556c0d300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f95d5e04138 CR3: 00000000793aa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__alloc_pages_node include/linux/gfp.h:237 [inline]
alloc_pages_node include/linux/gfp.h:260 [inline]
__kmalloc_large_node+0x95/0x1e0 mm/slab_common.c:1113
__do_kmalloc_node mm/slab_common.c:956 [inline]
__kmalloc+0xfe/0x190 mm/slab_common.c:981
kmalloc include/linux/slab.h:584 [inline]
kzalloc include/linux/slab.h:720 [inline]
ext4_update_inline_data+0x236/0x6b0 fs/ext4/inline.c:346
ext4_update_inline_dir fs/ext4/inline.c:1115 [inline]
ext4_try_add_inline_entry+0x328/0x990 fs/ext4/inline.c:1307
ext4_add_entry+0x5a4/0xeb0 fs/ext4/namei.c:2385
ext4_add_nondir+0x96/0x260 fs/ext4/namei.c:2772
ext4_create+0x36c/0x560 fs/ext4/namei.c:2817
lookup_open fs/namei.c:3413 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x12ac/0x2dd0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Above issue happens as follows:
ext4_iget
ext4_find_inline_data_nolock ->i_inline_off=164 i_inline_size=60
ext4_try_add_inline_entry
__ext4_mark_inode_dirty
ext4_expand_extra_isize_ea ->i_extra_isize=32 s_want_extra_isize=44
ext4_xattr_shift_entries
->after shift i_inline_off is incorrect, actually is change to 176
ext4_try_add_inline_entry
ext4_update_inline_dir
get_max_inline_xattr_value_size
if (EXT4_I(inode)->i_inline_off)
entry = (struct ext4_xattr_entry *)((void *)raw_inode +
EXT4_I(inode)->i_inline_off);
free += EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size));
->As entry is incorrect, then 'free' may be negative
ext4_update_inline_data
value = kzalloc(len, GFP_NOFS);
-> len is unsigned int, maybe very large, then trigger warning when
'kzalloc()'
To resolve the above issue we need to update 'i_inline_off' after
'ext4_xattr_shift_entries()'. We do not need to set
EXT4_STATE_MAY_INLINE_DATA flag here, since ext4_mark_inode_dirty()
already sets this flag if needed. Setting EXT4_STATE_MAY_INLINE_DATA
when it is needed may trigger a BUG_ON in ext4_writepages(). |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915/active: Fix misuse of non-idle barriers as fence trackers
Users reported oopses on list corruptions when using i915 perf with a
number of concurrently running graphics applications. Root cause analysis
pointed at an issue in barrier processing code -- a race among perf open /
close replacing active barriers with perf requests on kernel context and
concurrent barrier preallocate / acquire operations performed during user
context first pin / last unpin.
When adding a request to a composite tracker, we try to reuse an existing
fence tracker, already allocated and registered with that composite. The
tracker we obtain may already track another fence, may be an idle barrier,
or an active barrier.
If the tracker we get occurs a non-idle barrier then we try to delete that
barrier from a list of barrier tasks it belongs to. However, while doing
that we don't respect return value from a function that performs the
barrier deletion. Should the deletion ever fail, we would end up reusing
the tracker still registered as a barrier task. Since the same structure
field is reused with both fence callback lists and barrier tasks list,
list corruptions would likely occur.
Barriers are now deleted from a barrier tasks list by temporarily removing
the list content, traversing that content with skip over the node to be
deleted, then populating the list back with the modified content. Should
that intentionally racy concurrent deletion attempts be not serialized,
one or more of those may fail because of the list being temporary empty.
Related code that ignores the results of barrier deletion was initially
introduced in v5.4 by commit d8af05ff38ae ("drm/i915: Allow sharing the
idle-barrier from other kernel requests"). However, all users of the
barrier deletion routine were apparently serialized at that time, then the
issue didn't exhibit itself. Results of git bisect with help of a newly
developed igt@gem_barrier_race@remote-request IGT test indicate that list
corruptions might start to appear after commit 311770173fac ("drm/i915/gt:
Schedule request retirement when timeline idles"), introduced in v5.5.
Respect results of barrier deletion attempts -- mark the barrier as idle
only if successfully deleted from the list. Then, before proceeding with
setting our fence as the one currently tracked, make sure that the tracker
we've got is not a non-idle barrier. If that check fails then don't use
that tracker but go back and try to acquire a new, usable one.
v3: use unlikely() to document what outcome we expect (Andi),
- fix bad grammar in commit description.
v2: no code changes,
- blame commit 311770173fac ("drm/i915/gt: Schedule request retirement
when timeline idles"), v5.5, not commit d8af05ff38ae ("drm/i915: Allow
sharing the idle-barrier from other kernel requests"), v5.4,
- reword commit description.
(cherry picked from commit 506006055769b10d1b2b4e22f636f3b45e0e9fc7) |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: connac: do not check WED status for non-mmio devices
WED is supported just for mmio devices, so do not check it for usb or
sdio devices. This patch fixes the crash reported below:
[ 21.946627] wlp0s3u1i3: authenticate with c4:41:1e:f5:2b:1d
[ 22.525298] wlp0s3u1i3: send auth to c4:41:1e:f5:2b:1d (try 1/3)
[ 22.548274] wlp0s3u1i3: authenticate with c4:41:1e:f5:2b:1d
[ 22.557694] wlp0s3u1i3: send auth to c4:41:1e:f5:2b:1d (try 1/3)
[ 22.565885] wlp0s3u1i3: authenticated
[ 22.569502] wlp0s3u1i3: associate with c4:41:1e:f5:2b:1d (try 1/3)
[ 22.578966] wlp0s3u1i3: RX AssocResp from c4:41:1e:f5:2b:1d (capab=0x11 status=30 aid=3)
[ 22.579113] wlp0s3u1i3: c4:41:1e:f5:2b:1d rejected association temporarily; comeback duration 1000 TU (1024 ms)
[ 23.649518] wlp0s3u1i3: associate with c4:41:1e:f5:2b:1d (try 2/3)
[ 23.752528] wlp0s3u1i3: RX AssocResp from c4:41:1e:f5:2b:1d (capab=0x11 status=0 aid=3)
[ 23.797450] wlp0s3u1i3: associated
[ 24.959527] kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
[ 24.959640] BUG: unable to handle page fault for address: ffff88800c223200
[ 24.959706] #PF: supervisor instruction fetch in kernel mode
[ 24.959788] #PF: error_code(0x0011) - permissions violation
[ 24.959846] PGD 2c01067 P4D 2c01067 PUD 2c02067 PMD c2a8063 PTE 800000000c223163
[ 24.959957] Oops: 0011 [#1] PREEMPT SMP
[ 24.960009] CPU: 0 PID: 391 Comm: wpa_supplicant Not tainted 6.2.0-kvm #18
[ 24.960089] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
[ 24.960191] RIP: 0010:0xffff88800c223200
[ 24.960446] RSP: 0018:ffffc90000ff7698 EFLAGS: 00010282
[ 24.960513] RAX: ffff888028397010 RBX: ffff88800c26e630 RCX: 0000000000000058
[ 24.960598] RDX: ffff88800c26f844 RSI: 0000000000000006 RDI: ffff888028397010
[ 24.960682] RBP: ffff88800ea72f00 R08: 18b873fbab2b964c R09: be06b38235f3c63c
[ 24.960766] R10: 18b873fbab2b964c R11: be06b38235f3c63c R12: 0000000000000001
[ 24.960853] R13: ffff88800c26f84c R14: ffff8880063f0ff8 R15: ffff88800c26e644
[ 24.960950] FS: 00007effcea327c0(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000
[ 24.961036] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 24.961106] CR2: ffff88800c223200 CR3: 000000000eaa2000 CR4: 00000000000006b0
[ 24.961190] Call Trace:
[ 24.961219] <TASK>
[ 24.961245] ? mt76_connac_mcu_add_key+0x2cf/0x310
[ 24.961313] ? mt7921_set_key+0x150/0x200
[ 24.961365] ? drv_set_key+0xa9/0x1b0
[ 24.961418] ? ieee80211_key_enable_hw_accel+0xd9/0x240
[ 24.961485] ? ieee80211_key_replace+0x3f3/0x730
[ 24.961541] ? crypto_shash_setkey+0x89/0xd0
[ 24.961597] ? ieee80211_key_link+0x2d7/0x3a0
[ 24.961664] ? crypto_aead_setauthsize+0x31/0x50
[ 24.961730] ? sta_info_hash_lookup+0xa6/0xf0
[ 24.961785] ? ieee80211_add_key+0x1fc/0x250
[ 24.961842] ? rdev_add_key+0x41/0x140
[ 24.961882] ? nl80211_parse_key+0x6c/0x2f0
[ 24.961940] ? nl80211_new_key+0x24a/0x290
[ 24.961984] ? genl_rcv_msg+0x36c/0x3a0
[ 24.962036] ? rdev_mod_link_station+0xe0/0xe0
[ 24.962102] ? nl80211_set_key+0x410/0x410
[ 24.962143] ? nl80211_pre_doit+0x200/0x200
[ 24.962187] ? genl_bind+0xc0/0xc0
[ 24.962217] ? netlink_rcv_skb+0xaa/0xd0
[ 24.962259] ? genl_rcv+0x24/0x40
[ 24.962300] ? netlink_unicast+0x224/0x2f0
[ 24.962345] ? netlink_sendmsg+0x30b/0x3d0
[ 24.962388] ? ____sys_sendmsg+0x109/0x1b0
[ 24.962388] ? ____sys_sendmsg+0x109/0x1b0
[ 24.962440] ? __import_iovec+0x2e/0x110
[ 24.962482] ? ___sys_sendmsg+0xbe/0xe0
[ 24.962525] ? mod_objcg_state+0x25c/0x330
[ 24.962576] ? __dentry_kill+0x19e/0x1d0
[ 24.962618] ? call_rcu+0x18f/0x270
[ 24.962660] ? __dentry_kill+0x19e/0x1d0
[ 24.962702] ? __x64_sys_sendmsg+0x70/0x90
[ 24.962744] ? do_syscall_64+0x3d/0x80
[ 24.962796] ? exit_to_user_mode_prepare+0x1b/0x70
[ 24.962852] ? entry_SYSCA
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
nfsd: don't replace page in rq_pages if it's a continuation of last page
The splice read calls nfsd_splice_actor to put the pages containing file
data into the svc_rqst->rq_pages array. It's possible however to get a
splice result that only has a partial page at the end, if (e.g.) the
filesystem hands back a short read that doesn't cover the whole page.
nfsd_splice_actor will plop the partial page into its rq_pages array and
return. Then later, when nfsd_splice_actor is called again, the
remainder of the page may end up being filled out. At this point,
nfsd_splice_actor will put the page into the array _again_ corrupting
the reply. If this is done enough times, rq_next_page will overrun the
array and corrupt the trailing fields -- the rq_respages and
rq_next_page pointers themselves.
If we've already added the page to the array in the last pass, don't add
it to the array a second time when dealing with a splice continuation.
This was originally handled properly in nfsd_splice_actor, but commit
91e23b1c3982 ("NFSD: Clean up nfsd_splice_actor()") removed the check
for it. |
| In the Linux kernel, the following vulnerability has been resolved:
xsk: Add missing overflow check in xdp_umem_reg
The number of chunks can overflow u32. Make sure to return -EINVAL on
overflow. Also remove a redundant u32 cast assigning umem->npgs. |
| In the Linux kernel, the following vulnerability has been resolved:
arm64: dts: qcom: sc7280: Mark PCIe controller as cache coherent
If the controller is not marked as cache coherent, then kernel will
try to ensure coherency during dma-ops and that may cause data corruption.
So, mark the PCIe node as dma-coherent as the devices on PCIe bus are
cache coherent. |
| In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits
If the offset + length goes over the ethernet + vlan header, then the
length is adjusted to copy the bytes that are within the boundaries of
the vlan_ethhdr scratchpad area. The remaining bytes beyond ethernet +
vlan header are copied directly from the skbuff data area.
Fix incorrect arithmetic operator: subtract, not add, the size of the
vlan header in case of double-tagged packets to adjust the length
accordingly to address CVE-2023-0179. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Add sync after creating vram bo
There will be data corruption on vram allocated by svm
if the initialization is not complete and application is
writting on the memory. Adding sync to wait for the
initialization completion is to resolve this issue. |
| In the Linux kernel, the following vulnerability has been resolved:
cifs: Fix oops due to uncleared server->smbd_conn in reconnect
In smbd_destroy(), clear the server->smbd_conn pointer after freeing the
smbd_connection struct that it points to so that reconnection doesn't get
confused. |
| In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: adapt set backend to use GC transaction API
Use the GC transaction API to replace the old and buggy gc API and the
busy mark approach.
No set elements are removed from async garbage collection anymore,
instead the _DEAD bit is set on so the set element is not visible from
lookup path anymore. Async GC enqueues transaction work that might be
aborted and retried later.
rbtree and pipapo set backends does not set on the _DEAD bit from the
sync GC path since this runs in control plane path where mutex is held.
In this case, set elements are deactivated, removed and then released
via RCU callback, sync GC never fails. |
| In the Linux kernel, the following vulnerability has been resolved:
iommu/iova: Fix alloc iova overflows issue
In __alloc_and_insert_iova_range, there is an issue that retry_pfn
overflows. The value of iovad->anchor.pfn_hi is ~0UL, then when
iovad->cached_node is iovad->anchor, curr_iova->pfn_hi + 1 will
overflow. As a result, if the retry logic is executed, low_pfn is
updated to 0, and then new_pfn < low_pfn returns false to make the
allocation successful.
This issue occurs in the following two situations:
1. The first iova size exceeds the domain size. When initializing
iova domain, iovad->cached_node is assigned as iovad->anchor. For
example, the iova domain size is 10M, start_pfn is 0x1_F000_0000,
and the iova size allocated for the first time is 11M. The
following is the log information, new->pfn_lo is smaller than
iovad->cached_node.
Example log as follows:
[ 223.798112][T1705487] sh: [name:iova&]__alloc_and_insert_iova_range
start_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00
[ 223.799590][T1705487] sh: [name:iova&]__alloc_and_insert_iova_range
success start_pfn:0x1f0000,new->pfn_lo:0x1efe00,new->pfn_hi:0x1f08ff
2. The node with the largest iova->pfn_lo value in the iova domain
is deleted, iovad->cached_node will be updated to iovad->anchor,
and then the alloc iova size exceeds the maximum iova size that can
be allocated in the domain.
After judging that retry_pfn is less than limit_pfn, call retry_pfn+1
to fix the overflow issue. |
| In the Linux kernel, the following vulnerability has been resolved:
tcp: do not accept ACK of bytes we never sent
This patch is based on a detailed report and ideas from Yepeng Pan
and Christian Rossow.
ACK seq validation is currently following RFC 5961 5.2 guidelines:
The ACK value is considered acceptable only if
it is in the range of ((SND.UNA - MAX.SND.WND) <= SEG.ACK <=
SND.NXT). All incoming segments whose ACK value doesn't satisfy the
above condition MUST be discarded and an ACK sent back. It needs to
be noted that RFC 793 on page 72 (fifth check) says: "If the ACK is a
duplicate (SEG.ACK < SND.UNA), it can be ignored. If the ACK
acknowledges something not yet sent (SEG.ACK > SND.NXT) then send an
ACK, drop the segment, and return". The "ignored" above implies that
the processing of the incoming data segment continues, which means
the ACK value is treated as acceptable. This mitigation makes the
ACK check more stringent since any ACK < SND.UNA wouldn't be
accepted, instead only ACKs that are in the range ((SND.UNA -
MAX.SND.WND) <= SEG.ACK <= SND.NXT) get through.
This can be refined for new (and possibly spoofed) flows,
by not accepting ACK for bytes that were never sent.
This greatly improves TCP security at a little cost.
I added a Fixes: tag to make sure this patch will reach stable trees,
even if the 'blamed' patch was adhering to the RFC.
tp->bytes_acked was added in linux-4.2
Following packetdrill test (courtesy of Yepeng Pan) shows
the issue at hand:
0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1024) = 0
// ---------------- Handshake ------------------- //
// when window scale is set to 14 the window size can be extended to
// 65535 * (2^14) = 1073725440. Linux would accept an ACK packet
// with ack number in (Server_ISN+1-1073725440. Server_ISN+1)
// ,though this ack number acknowledges some data never
// sent by the server.
+0 < S 0:0(0) win 65535 <mss 1400,nop,wscale 14>
+0 > S. 0:0(0) ack 1 <...>
+0 < . 1:1(0) ack 1 win 65535
+0 accept(3, ..., ...) = 4
// For the established connection, we send an ACK packet,
// the ack packet uses ack number 1 - 1073725300 + 2^32,
// where 2^32 is used to wrap around.
// Note: we used 1073725300 instead of 1073725440 to avoid possible
// edge cases.
// 1 - 1073725300 + 2^32 = 3221241997
// Oops, old kernels happily accept this packet.
+0 < . 1:1001(1000) ack 3221241997 win 65535
// After the kernel fix the following will be replaced by a challenge ACK,
// and prior malicious frame would be dropped.
+0 > . 1:1(0) ack 1001 |
| In the Linux kernel, the following vulnerability has been resolved:
tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc
Any unprivileged user can attach N_GSM0710 ldisc, but it requires
CAP_NET_ADMIN to create a GSM network anyway.
Require initial namespace CAP_NET_ADMIN to do that. |
| In the Linux kernel, the following vulnerability has been resolved:
soc: qcom: llcc: Handle a second device without data corruption
Usually there is only one llcc device. But if there were a second, even
a failed probe call would modify the global drv_data pointer. So check
if drv_data is valid before overwriting it. |
| In the Linux kernel, the following vulnerability has been resolved:
atl1c: Work around the DMA RX overflow issue
This is based on alx driver commit 881d0327db37 ("net: alx: Work around
the DMA RX overflow issue").
The alx and atl1c drivers had RX overflow error which was why a custom
allocator was created to avoid certain addresses. The simpler workaround
then created for alx driver, but not for atl1c due to lack of tester.
Instead of using a custom allocator, check the allocated skb address and
use skb_reserve() to move away from problematic 0x...fc0 address.
Tested on AR8131 on Acer 4540. |
| In the Linux kernel, the following vulnerability has been resolved:
ceph: blocklist the kclient when receiving corrupted snap trace
When received corrupted snap trace we don't know what exactly has
happened in MDS side. And we shouldn't continue IOs and metadatas
access to MDS, which may corrupt or get incorrect contents.
This patch will just block all the further IO/MDS requests
immediately and then evict the kclient itself.
The reason why we still need to evict the kclient just after
blocking all the further IOs is that the MDS could revoke the caps
faster. |
| In the Linux kernel, the following vulnerability has been resolved:
freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL
Tetsuo-San noted that commit f5d39b020809 ("freezer,sched: Rewrite
core freezer logic") broke call_usermodehelper_exec() for the KILLABLE
case.
Specifically it was missed that the second, unconditional,
wait_for_completion() was not optional and ensures the on-stack
completion is unused before going out-of-scope. |
