github - ghsa-559c-j26r-95qc

GHSA-559C-J26R-95QC

Vulnerability from github – Published: 2024-04-28 15:30 – Updated: 2025-01-14 15:30

Details

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]

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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  "affected": [],
  "aliases": [
    "CVE-2022-48648"
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  "database_specific": {
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    "severity": "MODERATE"
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  "id": "GHSA-559c-j26r-95qc",
  "modified": "2025-01-14T15:30:49Z",
  "published": "2024-04-28T15:30:29Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48648"
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CVE-2022-48648 (GCVE-0-2022-48648)

Vulnerability from cvelistv5 – Published: 2024-04-28 13:00 – Updated: 2025-05-04 08:20

Summary

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]

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/b3b41d4d95d3822b2…
	https://git.kernel.org/stable/c/8547c7bfc0617e718…
	https://git.kernel.org/stable/c/b3b952168ee1f220b…
	https://git.kernel.org/stable/c/0a242eb2913a4aa3d…

Impacted products

Vendor

Product

Version

Linux

Affected: 12804793b17c0e19115a90d98f2f3df0cb79e233 , < b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7 (git)
Affected: 12804793b17c0e19115a90d98f2f3df0cb79e233 , < 8547c7bfc0617e7184e4da65b9b96681fcfe9998 (git)
Affected: 12804793b17c0e19115a90d98f2f3df0cb79e233 , < b3b952168ee1f220ba729fa100fd9d5aa752eb03 (git)
Affected: 12804793b17c0e19115a90d98f2f3df0cb79e233 , < 0a242eb2913a4aa3d6fbdb86559f27628e9466f3 (git)

Linux

Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.146 , ≤ 5.10.* (semver)
Unaffected: 5.15.71 , ≤ 5.15.* (semver)
Unaffected: 5.19.12 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-559C-J26R-95QC

CVE-2022-48648 (GCVE-0-2022-48648)

Tags

Sightings

Nomenclature