CVE-2021-47521

can: sja1000: fix use after free in ems_pcmcia_add_card()

State: Published
Severity: Not scored
Published: May 24, 2024
Updated: May 11, 2026
Reserved: May 24, 2024

Read the record on cve.org

Description

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

can: sja1000: fix use after free in ems_pcmcia_add_card()

If the last channel is not available then "dev" is freed. Fortunately, we can just use "pdev->irq" instead.

Also we should check if at least one channel was set up.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	fd734c6f25aea4b2b44b045e489aec67b388577e to before cbd86110546f7f730a1f5d7de56c944a336c15c4Affected fd734c6f25aea4b2b44b045e489aec67b388577e to before 1dd5b819f7e406dc15bbc7670596ff25261aaa2aAffected fd734c6f25aea4b2b44b045e489aec67b388577e to before c8718026ba287168ff9ad0ccc4f9a413062cba36Affected fd734c6f25aea4b2b44b045e489aec67b388577e to before ccf070183e4655824936c0f96c4a2bcca93419aaAffected fd734c6f25aea4b2b44b045e489aec67b388577e to before 1a295fea90e1acbe80c6d4940f5ff856edcd6becAffected fd734c6f25aea4b2b44b045e489aec67b388577e to before 923f4dc5df679f678e121c20bf2fd70f7bf3e288Affected fd734c6f25aea4b2b44b045e489aec67b388577e to before 474f9a8534f5f89841240a7e978bafd6e1e039ceAffected fd734c6f25aea4b2b44b045e489aec67b388577e to before 3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45Affected
LinuxLinux	3.2Affected before 3.2Not affected 4.4.295 through 4.4.Not affected 4.9.293 through 4.9.Not affected 4.14.258 through 4.14.Not affected 4.19.221 through 4.19.Not affected 5.4.165 through 5.4.Not affected 5.10.85 through 5.10.Not affected 5.15.8 through 5.15.*Not affected 5.16 and laterNot affected

Product

Versions

LinuxLinux

fd734c6f25aea4b2b44b045e489aec67b388577e to before cbd86110546f7f730a1f5d7de56c944a336c15c4Affected
fd734c6f25aea4b2b44b045e489aec67b388577e to before 1dd5b819f7e406dc15bbc7670596ff25261aaa2aAffected
fd734c6f25aea4b2b44b045e489aec67b388577e to before c8718026ba287168ff9ad0ccc4f9a413062cba36Affected
fd734c6f25aea4b2b44b045e489aec67b388577e to before ccf070183e4655824936c0f96c4a2bcca93419aaAffected
fd734c6f25aea4b2b44b045e489aec67b388577e to before 1a295fea90e1acbe80c6d4940f5ff856edcd6becAffected
fd734c6f25aea4b2b44b045e489aec67b388577e to before 923f4dc5df679f678e121c20bf2fd70f7bf3e288Affected
fd734c6f25aea4b2b44b045e489aec67b388577e to before 474f9a8534f5f89841240a7e978bafd6e1e039ceAffected
fd734c6f25aea4b2b44b045e489aec67b388577e to before 3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45Affected

LinuxLinux

3.2Affected
before 3.2Not affected
4.4.295 through 4.4.*Not affected
4.9.293 through 4.9.*Not affected
4.14.258 through 4.14.*Not affected
4.19.221 through 4.19.*Not affected
5.4.165 through 5.4.*Not affected
5.10.85 through 5.10.*Not affected
5.15.8 through 5.15.*Not affected
5.16 and laterNot affected

References

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