What’s Vulnerable › Vulnerabilities

CVE-2022-49114: scsi: libfc: Fix use after free in fc_exch_abts_resp()

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-08-04
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix use after free in fc_exch_abts_resp() fc_exch_release(ep) will decrease the ep's reference count. When the reference count reaches zero, it is freed. But ep is still used in the following code, which will lead to a use after free. Return after the fc_exch_release() call to avoid use after free.

Affected products

• Linux kernel: before 4.9.311; from 4.10 before 4.14.276; from 4.15 before 4.19.238; from 4.20 before 5.4.189; from 5.5 before 5.10.111; from 5.11 before 5.15.34 — fixed in 4.14.276, 4.19.238, 4.9.311, 5.10.111, 5.15.34, 5.16.20

How to fix

Upgrade to a fixed version: Linux kernel 4.14.276, 4.19.238, 4.9.311, 5.10.111. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1d7effe5fff9d28e45e18ac3a564067c7ddfe898
• https://git.kernel.org/stable/c/271add11994ba1a334859069367e04d2be2ebdd4
• https://git.kernel.org/stable/c/412dd8299b02e4410fe77b8396953c1a8dde183a
• https://git.kernel.org/stable/c/499d198494e77b6533251b9b909baf5c101129cb
• https://git.kernel.org/stable/c/4a131d4ea8b581ac9b01d3a72754db4848be3232
• https://git.kernel.org/stable/c/5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836
• https://git.kernel.org/stable/c/6044ad64f41c87382cfeeca281573d1886d80cbe
• https://git.kernel.org/stable/c/87909291762d08fdb60d19069d7a89b5b308d0ef
• https://git.kernel.org/stable/c/f581df412bc45c95176e3c808ee2839c05b2ab0c

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