CVE-2022-48647
Vulnerability from cvelistv5
Published
2024-04-28 13:00
Modified
2024-12-19 08:04
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sfc: fix TX channel offset when using legacy interrupts In legacy interrupt mode the tx_channel_offset was hardcoded to 1, but that's not correct if efx_sepparate_tx_channels is false. In that case, the offset is 0 because the tx queues are in the single existing channel at index 0, together with the rx queue. Without this fix, as soon as you try to send any traffic, it tries to get the tx queues from an uninitialized channel getting these errors: WARNING: CPU: 1 PID: 0 at drivers/net/ethernet/sfc/tx.c:540 efx_hard_start_xmit+0x12e/0x170 [sfc] [...] RIP: 0010:efx_hard_start_xmit+0x12e/0x170 [sfc] [...] Call Trace: <IRQ> dev_hard_start_xmit+0xd7/0x230 sch_direct_xmit+0x9f/0x360 __dev_queue_xmit+0x890/0xa40 [...] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [...] RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc] [...] Call Trace: <IRQ> dev_hard_start_xmit+0xd7/0x230 sch_direct_xmit+0x9f/0x360 __dev_queue_xmit+0x890/0xa40 [...]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/360910b88d1466a90644a4e0533803b594344a2b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5f623a77cfc2d501d72bcb4f9ee71721e6c766ff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4afd3878f961d3517f27b3213730fceef77945c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f232af4295653afa4ade3230462b3be15ad16419
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/360910b88d1466a90644a4e0533803b594344a2b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5f623a77cfc2d501d72bcb4f9ee71721e6c766ff
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b4afd3878f961d3517f27b3213730fceef77945c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f232af4295653afa4ade3230462b3be15ad16419
Impacted products
Vendor Product Version
Linux Linux Version: bf2af9b24313553f3f0b30443220ab0ac8595d2d
Version: 06cb7e134f8f4a11b66f1dbeb5f237412a0aeedc
Version: c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2
Version: c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2
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   Linux Linux Version: 5.19
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