CVE-2021-47357

atm: iphase: fix possible use-after-free in ia_module_exit()

State: Published
Severity: Not scored
Published: May 21, 2024
Updated: May 11, 2026
Reserved: May 21, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

atm: iphase: fix possible use-after-free in ia_module_exit()

This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free.

Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9e161687855175334ca93c6c3ccb221731194479Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a832ee2f2145f57443b2d565f8cb5490e8339f42Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before bcdd2be48edd8c6867fb44112cb8d18086beae29Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 89ce0b0747f319eb70f85bc820dcc43cebbd5417Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c9172498d4d62c9b64e5fb37c1ee0343e65fe51bAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e759ff76ebbbfcdcf83b6634c54dc47828573d8bAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b58d246a058ae88484758cd4ab27b3180fd5ecf8Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before d1fb12412874c94ad037e11d0ecdd1140a439297Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1c72e6ab66b9598cac741ed397438a52065a8f1fAffected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 4.4.276 through 4.4.Not affected 4.9.276 through 4.9.Not affected 4.14.240 through 4.14.Not affected 4.19.198 through 4.19.Not affected 5.4.133 through 5.4.Not affected 5.10.51 through 5.10.Not affected 5.12.18 through 5.12.Not affected 5.13.3 through 5.13.Not affected 5.14 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9e161687855175334ca93c6c3ccb221731194479Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a832ee2f2145f57443b2d565f8cb5490e8339f42Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before bcdd2be48edd8c6867fb44112cb8d18086beae29Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 89ce0b0747f319eb70f85bc820dcc43cebbd5417Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c9172498d4d62c9b64e5fb37c1ee0343e65fe51bAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e759ff76ebbbfcdcf83b6634c54dc47828573d8bAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b58d246a058ae88484758cd4ab27b3180fd5ecf8Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before d1fb12412874c94ad037e11d0ecdd1140a439297Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1c72e6ab66b9598cac741ed397438a52065a8f1fAffected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
4.4.276 through 4.4.*Not affected
4.9.276 through 4.9.*Not affected
4.14.240 through 4.14.*Not affected
4.19.198 through 4.19.*Not affected
5.4.133 through 5.4.*Not affected
5.10.51 through 5.10.*Not affected
5.12.18 through 5.12.*Not affected
5.13.3 through 5.13.*Not affected
5.14 and laterNot affected

References

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