CVE-2022-49084

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < 9648adb1b3ece55c657d3a4f52bfee663b710dfeaffected
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < 034a92c6a81048128fc7b18d278d52438a13902aaffected
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < 8928239e5e2e460d95b8a0b89f61671625e7ece0affected
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < c9bdce2359b5f4986eb38d1e81865b3586cc20d2affected
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < b2d6b3db9d1cf80908964036dbe1c52a86b1afb1affected
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < e1fd0c42acfa22bb34d2ab6a111484f466ab8093affected
LinuxLinux8a8633978b842c88fbcfe00d4e5dde96048f630e < 4e910dbe36508654a896d5735b318c0b88172570affected
LinuxLinux4.18affected
LinuxLinux0 < 4.18unaffected
LinuxLinux4.19.238 <= 4.19.*unaffected
LinuxLinux5.4.189 <= 5.4.*unaffected
LinuxLinux5.10.111 <= 5.10.*unaffected
LinuxLinux5.15.34 <= 5.15.*unaffected
LinuxLinux5.16.20 <= 5.16.*unaffected
LinuxLinux5.17.3 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

References