Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sfc: fix null pointer dereference in efx_hard_start_xmit Trying to get the channel from the tx_queue variable here is wrong because we can only be here if tx_queue is NULL, so we shouldn't dereference it. As the above comment in the code says, this is very unlikely to happen, but it's wrong anyway so let's fix it. I hit this issue because of a different bug that caused tx_queue to be NULL. If that happens, this is the error message that we get here: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [...] RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 12804793b17c0e19115a90d98f2f3df0cb79e233 before b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7; affected 12804793b17c0e19115a90d98f2f3df0cb79e233 before 8547c7bfc0617e7184e4da65b9b96681fcfe9998; affected 12804793b17c0e19115a90d98f2f3df0cb79e233 before b3b952168ee1f220ba729fa100fd9d5aa752eb03; affected 12804793b17c0e19115a90d98f2f3df0cb79e233 before 0a242eb2913a4aa3d6fbdb86559f27628e9466f3 |
| Linux / Linux | affected 5.10; unaffected 0 before 5.10; unaffected 5.10.146 through 5.10.*; unaffected 5.15.71 through 5.15.*; unaffected 5.19.12 through 5.19.*; unaffected 6.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7
- https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998
- https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03
- https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.