CVE-2023-53681

medium

In the Linux kernel, the following vulnerability has been resolved: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent In some specif…

Vendor / product: Linux — linux kernel

In the Linux kernel, the following vulnerability has been resolved: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent In some specific situations, the return value of __bch_btree_node_alloc may be NULL. This may lead to a potential NULL pointer dereference in caller function like a calling chain : btree_split->bch_btree_node_alloc->__bch_btree_node_alloc. Fix it by initializing the return value in __bch_btree_node_alloc.

CVSS

5.5

5.5 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2025-10-07 16:15

Modified: 2026-10-28 20:10

NVD status: Analyzed

Last synced 9 hours ago

Verified against the source API 2026-10-28 20:34 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥3.10 <4.19.291, ≥4.20 <5.4.253, ≥5.5 <5.10.188, ≥5.11 <5.15.121, ≥5.16 <6.1.39, ≥6.2 <6.4.4

Weakness classification (CWE)

CWE-476

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4

Patch / mitigation: https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4

Patch / mitigation: https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f

Patch / mitigation: https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4

Patch / mitigation: https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944

Patch / mitigation: https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198

Patch / mitigation: https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03

References

https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-10-28 20:34 UTC · record ↗

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CVE-2023-53681

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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