CVE-2022-49084
"qede Linux Kernel Null Pointer Dereference Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: qede: confirm skb is allocated before using qede_build_skb() assumes build_skb() always works and goes straight to skb_reserve(). However, build_skb() can fail under memory pressure. This results in a kernel panic because the skb to reserve is NULL. Add a check in case build_skb() failed to allocate and return NULL. The NULL return is handled correctly in callers to qede_build_skb().
INFO
Published Date :
Feb. 26, 2025, 7 a.m.
Last Modified :
Feb. 26, 2025, 7 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: qede: confirm skb is allocated before using qede_build_skb() assumes build_skb() always works and goes straight to skb_reserve(). However, build_skb() can fail under memory pressure. This results in a kernel panic because the skb to reserve is NULL. Add a check in case build_skb() failed to allocate and return NULL. The NULL return is handled correctly in callers to qede_build_skb(). Added Reference https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a Added Reference https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570 Added Reference https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0 Added Reference https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfe Added Reference https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1 Added Reference https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2 Added Reference https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49084 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49084
weaknesses.