s390/boot: Avoid IPL parameter append past command line (Linux Linux)

CVE-2026-98403
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En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 11 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Received

Description

In the Linux kernel, the following vulnerability has been resolved: s390/boot: Avoid IPL parameter append past command line A command line may occupy all but the terminating byte of COMMAND_LINE_SIZE. In that case append_ipl_block_parm() passes a zero size to the IPL parameter conversion helpers and points the destination one byte past early_command_line. The helpers subtract one from the unsigned size and write the converted parameter outside the command line buffer. Convert the IPL parameter in the command line parsing buffer first. A parameter beginning with '=' can then replace the existing command line regardless of its length, while other parameters are appended only when space remains.

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 5ecb2da660ab8eddafe059a6a8a708465db89ca2 < af9866021a00ab9eeacf0c33ee73f3d134b4ed70 ; affected 5ecb2da660ab8eddafe059a6a8a708465db89ca2 < 73eec5a0d55916d7e1115f5d03a7ffc06d6215cf ; affected 5ecb2da660ab8eddafe059a6a8a708465db89ca2 < 8d11bfec8666f8409fac9072e9c25b691d3e30ac ; affected 5ecb2da660ab8eddafe059a6a8a708465db89ca2 < d76181dfabdaa720703167393704efacba343442
Linux · Linuxaffected 5.16 ; unaffected 0 < 5.16 ; unaffected 6.12.112 ≤ 6.12.* ; unaffected 6.18.53 ≤ 6.18.* ; unaffected 7.2.7 ≤ 7.2.* ; unaffected 7.3 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD