{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-68742", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T10:30:51.030Z", "datePublished": "2025-12-24T12:09:39.341Z", "dateUpdated": "2025-12-24T12:09:39.341Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-24T12:09:39.341Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix invalid prog->stats access when update_effective_progs fails\n\nSyzkaller triggers an invalid memory access issue following fault\ninjection in update_effective_progs. The issue can be described as\nfollows:\n\n__cgroup_bpf_detach\n update_effective_progs\n compute_effective_progs\n bpf_prog_array_alloc <-- fault inject\n purge_effective_progs\n /* change to dummy_bpf_prog */\n array->items[index] = &dummy_bpf_prog.prog\n\n---softirq start---\n__do_softirq\n ...\n __cgroup_bpf_run_filter_skb\n __bpf_prog_run_save_cb\n bpf_prog_run\n stats = this_cpu_ptr(prog->stats)\n /* invalid memory access */\n flags = u64_stats_update_begin_irqsave(&stats->syncp)\n---softirq end---\n\n static_branch_dec(&cgroup_bpf_enabled_key[atype])\n\nThe reason is that fault injection caused update_effective_progs to fail\nand then changed the original prog into dummy_bpf_prog.prog in\npurge_effective_progs. Then a softirq came, and accessing the members of\ndummy_bpf_prog.prog in the softirq triggers invalid mem access.\n\nTo fix it, skip updating stats when stats is NULL."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/filter.h", "kernel/bpf/syscall.c"], "versions": [{"version": "492ecee892c2a4ba6a14903d5d586ff750b7e805", "lessThan": "539137e3038ce6f953efd72110110f03c14c7d97", "status": "affected", "versionType": "git"}, {"version": "492ecee892c2a4ba6a14903d5d586ff750b7e805", "lessThan": "56905bb70c8b88421709bb4e32fcba617aa37d41", "status": "affected", "versionType": "git"}, {"version": "492ecee892c2a4ba6a14903d5d586ff750b7e805", "lessThan": "2579c356ccd35d06238b176e4b460978186d804b", "status": "affected", "versionType": "git"}, {"version": "492ecee892c2a4ba6a14903d5d586ff750b7e805", "lessThan": "7dc211c1159d991db609bdf4b0fb9033c04adcbc", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/filter.h", "kernel/bpf/syscall.c"], "versions": [{"version": "5.1", "status": "affected"}, {"version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.63", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.13", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.2", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.12.63"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.17.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.18.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.19-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/539137e3038ce6f953efd72110110f03c14c7d97"}, {"url": "https://git.kernel.org/stable/c/56905bb70c8b88421709bb4e32fcba617aa37d41"}, {"url": "https://git.kernel.org/stable/c/2579c356ccd35d06238b176e4b460978186d804b"}, {"url": "https://git.kernel.org/stable/c/7dc211c1159d991db609bdf4b0fb9033c04adcbc"}], "title": "bpf: Fix invalid prog->stats access when update_effective_progs fails", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix invalid prog->stats access when update_effective_progs fails\n\nSyzkaller triggers an invalid memory access issue following fault\ninjection in update_effective_progs. The issue can be described as\nfollows:\n\n__cgroup_bpf_detach\n update_effective_progs\n compute_effective_progs\n bpf_prog_array_alloc <-- fault inject\n purge_effective_progs\n /* change to dummy_bpf_prog */\n array->items[index] = &dummy_bpf_prog.prog\n\n---softirq start---\n__do_softirq\n ...\n __cgroup_bpf_run_filter_skb\n __bpf_prog_run_save_cb\n bpf_prog_run\n stats = this_cpu_ptr(prog->stats)\n /* invalid memory access */\n flags = u64_stats_update_begin_irqsave(&stats->syncp)\n---softirq end---\n\n static_branch_dec(&cgroup_bpf_enabled_key[atype])\n\nThe reason is that fault injection caused update_effective_progs to fail\nand then changed the original prog into dummy_bpf_prog.prog in\npurge_effective_progs. Then a softirq came, and accessing the members of\ndummy_bpf_prog.prog in the softirq triggers invalid mem access.\n\nTo fix it, skip updating stats when stats is NULL."}], "id": "CVE-2025-68742", "lastModified": "2025-12-24T13:16:29.147", "metrics": {}, "published": "2025-12-24T13:16:29.147", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2579c356ccd35d06238b176e4b460978186d804b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/539137e3038ce6f953efd72110110f03c14c7d97"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/56905bb70c8b88421709bb4e32fcba617aa37d41"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7dc211c1159d991db609bdf4b0fb9033c04adcbc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}