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CVE-2026-68434

serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms

In the Linux kernel, the following vulnerability has been resolved:

serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms

Commit b1b4efea05a5 ("serial: 8250_mid: Disable DMA for selected
platforms") replaced the dnv_board setup and exit callbacks with
PTR_IF(false, ...), which evaluates to NULL. However, the three call
sites in mid8250_probe() and mid8250_remove() unconditionally
dereference these function pointers without NULL checks, causing a NULL
pointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon
D (ICX-D/CDF), or Snowridge (SNR) platform.

Fix this by adding the missing NULL checks before calling the setup and
exit callbacks.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 763d61ded752fbb3116efc951eff4363f237b7e0
Version < bdaa8871b53fe9b1730ef64dda2fcd662fd83339
Status affected
Version c7d190bb07bf4e3b217c69370e94d1b4c80a40ad
Version < f85a42fb90399dedcf81c146d09c07e4548b1e8c
Status affected
Version 0b3ed3fa227ba778cabed96e7f8d84addb8bdf9c
Version < 4ea933a36a14bec19b71025cdd8407bafbd67ec1
Status affected
Version 587afb06a5d1dc5092d3d9e9ac3ccf22094d50c6
Version < 1096397c31f6bffa95e77bdd18fbca085be83e10
Status affected
Version 977855894bca4b87afa50d21e3f3e85a5a0e901f
Version < 600dcd548fb2b00a69f447684f52ba45d5a3540e
Status affected
Version 1cd54e217c6e2cdb794a897b2f855e13ffcee586
Version < b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56
Status affected
Version 9690e8a342632344984af72bc56b7a1fba61e6cb
Version < 8cbad52ccfa6a7f089cfab34979bc6cc3bff25be
Status affected
Version b1b4efea05a56c0995e4702a86d6624b4fdff32f
Version < 7fb13fd7e9a59a37cd911efff83abe19e3ee029d
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 5.10.261
Version < 5.10.266
Status affected
Version 5.15.212
Version < 5.15.217
Status affected
Version 6.1.178
Version < 6.1.183
Status affected
Version 6.6.145
Version < 6.6.148
Status affected
Version 6.12.96
Version < 6.12.101
Status affected
Version 6.18.39
Version < 6.18.42
Status affected
Version 7.1.4
Version < 7.1.6
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.071
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/1096397c31f6bffa95e77bdd18fbca085be83e10
https://git.kernel.org/stable/c/600dcd548fb2b00a69f447684f52ba45d5a3540e
https://git.kernel.org/stable/c/7fb13fd7e9a59a37cd911efff83abe19e3ee029d
https://git.kernel.org/stable/c/8cbad52ccfa6a7f089cfab34979bc6cc3bff25be
https://git.kernel.org/stable/c/b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56
https://git.kernel.org/stable/c/4ea933a36a14bec19b71025cdd8407bafbd67ec1
https://git.kernel.org/stable/c/bdaa8871b53fe9b1730ef64dda2fcd662fd83339
https://git.kernel.org/stable/c/f85a42fb90399dedcf81c146d09c07e4548b1e8c