CVE - CVE-2022-48647

CVE-ID
CVE-2022-48647	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/360910b88d1466a90644a4e0533803b594344a2b URL:https://git.kernel.org/stable/c/360910b88d1466a90644a4e0533803b594344a2b MISC:https://git.kernel.org/stable/c/5f623a77cfc2d501d72bcb4f9ee71721e6c766ff URL:https://git.kernel.org/stable/c/5f623a77cfc2d501d72bcb4f9ee71721e6c766ff MISC:https://git.kernel.org/stable/c/b4afd3878f961d3517f27b3213730fceef77945c URL:https://git.kernel.org/stable/c/b4afd3878f961d3517f27b3213730fceef77945c MISC:https://git.kernel.org/stable/c/f232af4295653afa4ade3230462b3be15ad16419 URL:https://git.kernel.org/stable/c/f232af4295653afa4ade3230462b3be15ad16419
Assigning CNA
kernel.org
Date Record Created
20240225	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240225)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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