CVE-2025-68742bpf: Fix invalid prog->stats access when update_effective_progs fails
Updated under an hour ago ()
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It affects Linux and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: bpf: Fix invalid prog->stats access when update_effective_progs fails Syzkaller triggers an invalid memory access issue following fault injection in update_effective_progs. The issue can be described as follows: __cgroup_bpf_detach update_effective_progs compute_effective_progs bpf_prog_array_alloc <-- fault inject purge_effective_progs /* change to dummy_bpf_prog */ array->items[index] = &dummy_bpf_prog.prog ---softirq start--- __do_softirq ... __cgroup_bpf_run_filter_skb __bpf_prog_run_save_cb bpf_prog_run stats = this_cpu_ptr(prog->stats) /* invalid memory access */ flags = u64_stats_update_begin_irqsave(&stats->syncp) ---softirq end--- static_branch_dec(&cgroup_bpf_enabled_key[atype]) The reason is that fault injection caused update_effective_progs to fail and then changed the original prog into dummy_bpf_prog.prog in purge_effective_progs. Then a softirq came, and accessing the members of dummy_bpf_prog.prog in the softirq triggers invalid mem access. To fix it, skip updating stats when stats is NULL.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 492ecee892c2a4ba6a14903d5d586ff750b7e805 builds before 93d1964773ff513c9bd530f7686d3e48b786fa6b; from 492ecee892c2a4ba6a14903d5d586ff750b7e805 before bf2c990b012100610c0f1ec5c4ea434da2d080c2; from 492ecee892c2a4ba6a14903d5d586ff750b7e805 before 539137e3038ce6f953efd72110110f03c14c7d97; from 492ecee892c2a4ba6a14903d5d586ff750b7e805 before 56905bb70c8b88421709bb4e32fcba617aa37d41; from 492ecee892c2a4ba6a14903d5d586ff750b7e805 before 2579c356ccd35d06238b176e4b460978186d804b; 492ecee892c2a4ba6a14903d5d586ff750b7e805 builds before 7dc211c1159d991db609bdf4b0fb9033c04adcbc | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
References
- https://git.kernel.org/stable/c/93d1964773ff513c9bd530f7686d3e48b786fa6b
- https://git.kernel.org/stable/c/bf2c990b012100610c0f1ec5c4ea434da2d080c2
- https://git.kernel.org/stable/c/539137e3038ce6f953efd72110110f03c14c7d97
- https://git.kernel.org/stable/c/56905bb70c8b88421709bb4e32fcba617aa37d41
- https://git.kernel.org/stable/c/2579c356ccd35d06238b176e4b460978186d804b
- https://git.kernel.org/stable/c/7dc211c1159d991db609bdf4b0fb9033c04adcbc
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.