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TI-2026-14374 Aliases CVE-2026-17523GHSA-pvqq-pw2j-4v86

can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet

Priority LOW 35Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet This patch switches the timer to HRTIMER_MODE_SOFT, which executed the timer callback in softirq context and removes the hrtimer_tasklet.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00165 5th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 4.19.226, 5.4Red Hat: 5 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.29 and later4.19.226, 5.4Patch availableCNA
  • Linux VendorLinux Affected 2.6.29 and later Fixed in 4.19.226, 5.4 Patch available CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.29.1 to before 4.19.226; 4.20 to before 5.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:-:*:*:*:*:*:*2.6.29VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc2:*:*:*:*:*:*2.6.29 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc3:*:*:*:*:*:*2.6.29 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc4:*:*:*:*:*:*2.6.29 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc5:*:*:*:*:*:*2.6.29 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc6:*:*:*:*:*:*2.6.29 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc7:*:*:*:*:*:*2.6.29 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.29:rc8:*:*:*:*:*:*2.6.29 rc8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.29.1 to before 4.19.226; 4.20 to before 5.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:-:*:*:*:*:*:* Versions 2.6.29 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc2:*:*:*:*:*:* Versions 2.6.29 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc3:*:*:*:*:*:* Versions 2.6.29 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc4:*:*:*:*:*:* Versions 2.6.29 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc5:*:*:*:*:*:* Versions 2.6.29 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc6:*:*:*:*:*:* Versions 2.6.29 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc7:*:*:*:*:*:* Versions 2.6.29 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.29:rc8:*:*:*:*:*:* Versions 2.6.29 rc8 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.19.226, 5.4

Red Hat 5 advisories

  • RHSA-2026:65711 Released 2026-09-09 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.213.1.el8_6, kernel-4.18.0-372.213.1.el8_6, kernel-abi-stablelists-4.18.0-372.213.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.213.1.el8_6, kernel-4.18.0-372.213.1.el8_6, kernel-abi-stablelists-4.18.0-372.213.1.el8_6 +14
  • RHSA-2026:65710 Released 2026-09-09 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.206.1.el8_4, kernel-4.18.0-305.206.1.el8_4, kernel-abi-stablelists-4.18.0-305.206.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.206.1.el8_4, kernel-4.18.0-305.206.1.el8_4, kernel-abi-stablelists-4.18.0-305.206.1.el8_4 +14
  • RHSA-2026:61932 Released 2026-09-01 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.163.1.el8_8, kernel-4.18.0-477.163.1.el8_8, kernel-abi-stablelists-4.18.0-477.163.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.163.1.el8_8, kernel-4.18.0-477.163.1.el8_8, kernel-abi-stablelists-4.18.0-477.163.1.el8_8 +14
Show 2 more Red Hat advisories
  • RHSA-2026:55764 Released 2026-08-17 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.156.1.el8_10, kernel-4.18.0-553.156.1.el8_10, kernel-abi-stablelists-4.18.0-553.156.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.156.1.el8_10
  • RHSA-2026:55765 Released 2026-08-17 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.156.1.rt7.497.el8_10, kernel-rt-core-4.18.0-553.156.1.rt7.497.el8_10, kernel-rt-debug-4.18.0-553.156.1.rt7.497.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.156.1.rt7.497.el8_10, kernel-rt-core-4.18.0-553.156.1.rt7.497.el8_10, kernel-rt-debug-4.18.0-553.156.1.rt7.497.el8_10 +7

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:55764
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:65710
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:65711
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:61932
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:65710
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:65711
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:61932
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:55764
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:55765
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:55765
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-17523
  2. 2026-10-03 Alias added: GHSA-pvqq-pw2j-4v86

References

Patch 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences