CVE-2022-48647
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
sfc: fix TX channel offset when using legacy interrupts
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 [...]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| bf2af9b24313553f3f0b30443220ab0ac8595d2d | affected | git | b4afd3878f961d3517f27b3213730fceef77945c | Unavailable | None listed |
| 06cb7e134f8f4a11b66f1dbeb5f237412a0aeedc | affected | git | 360910b88d1466a90644a4e0533803b594344a2b | Unavailable | None listed |
| c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2 | affected | git | 5f623a77cfc2d501d72bcb4f9ee71721e6c766ff | Unavailable | None listed |
| c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2 | affected | git | f232af4295653afa4ade3230462b3be15ad16419 | Unavailable | None listed |
| 1a7c0b3ef93d1d1dae7b0a85dab3ac6e3ad0ef61 | affected | git | Unavailable | Unavailable | None listed |
| b2d60329a0b88c4e35017436ee29c43be59d46a5 | affected | git | Unavailable | Unavailable | None listed |
| 5.10.122 | affected | semver | 5.10.146 | Unavailable | None listed |
| 5.15.47 | affected | semver | 5.15.71 | Unavailable | None listed |
| 5.17.15 | affected | semver | 5.18 | Unavailable | None listed |
| 5.18.4 | affected | semver | 5.19 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.19 | Unavailable | None listed |
| 5.10.146 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.71 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.19.12 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |