CVE-2026-64370posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path In do_cpu_nanosleep(), posix_cpu_timer_create() takes a pid reference via get_pid() and stores it in timer.it.cpu.pid. If the subsequent posix_cpu_timer_set() call fails, the function returns immediately without calling posix_cpu_timer_del() to release the pid reference, causing a leak. Fix it by calling posix_cpu_timer_del() before the unlock-and-return on the error path, consistent with the other exit paths in the same function.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- 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
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before afed3cdc1cca133f804fcf57ff228974f424b23a; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8a270b1258797f61b61da44f8bfd41a581b5c85b; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d605d00085adc3fddf67de01dc2a44aebf1a3fb5; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e5ffc638faf5dc7d9dc85c9a95e10bf97442e0c0; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before eb4cec29a78334d09bcfb41c0660cdd62ba05843; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7776f9226e99eb49d97492b0b445027cfcb189da; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8f06363446c5d043c9a7c008b250040e9de98cf9; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 87bd2ad568e15b90d5f7d4bcd70342d05dad649c | 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 |
linux linux_kernel linux:linux_kernel | from 2.6.12.1 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39; from 6.19 before 7.1.4; 2.6.12; and 4 more ranges | NVD |
References
- https://git.kernel.org/stable/c/afed3cdc1cca133f804fcf57ff228974f424b23apatch
- https://git.kernel.org/stable/c/8a270b1258797f61b61da44f8bfd41a581b5c85bpatch
- https://git.kernel.org/stable/c/d605d00085adc3fddf67de01dc2a44aebf1a3fb5patch
- https://git.kernel.org/stable/c/e5ffc638faf5dc7d9dc85c9a95e10bf97442e0c0patch
- https://git.kernel.org/stable/c/eb4cec29a78334d09bcfb41c0660cdd62ba05843patch
- https://git.kernel.org/stable/c/7776f9226e99eb49d97492b0b445027cfcb189dapatch
- https://git.kernel.org/stable/c/8f06363446c5d043c9a7c008b250040e9de98cf9patch
- https://git.kernel.org/stable/c/87bd2ad568e15b90d5f7d4bcd70342d05dad649cpatch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlthird-party-advisory
- 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.