bpf, arm64: Fix address emission with tag-based KASAN enabled (Linux Linux)

CVE-2024-50203
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.23 % · percentile 14 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix address emission with tag-based KASAN enabled When BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image struct on the stack is passed during the size calculation pass and an address on the heap is passed during code generation. This may cause a heap buffer overflow if the heap address is tagged because emit_a64_mov_i64() will emit longer code than it did during the size calculation pass. The same problem could occur without tag-based KASAN if one of the 16-bit words of the stack address happened to be all-ones during the size calculation pass. Fix the problem by assuming the worst case (4 instructions) when calculating the size of the bpf_tramp_image address emission.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 077149478497b2f00ff4fd9da2c892defa6418d8 < 9e80f366ebfdfafc685fe83a84c34f7ef01cbe88 ; affected d9664e6ff040798a46cdc5d401064f55b8676c83 < f521c2a0c0c4585f36d912bf62c852b88682c4f2 ; affected 19d3c179a37730caf600a97fed3794feac2b197b < 7db1a2121f3c7903b8e397392beec563c3d00950 ; affected 19d3c179a37730caf600a97fed3794feac2b197b < a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c ; affected 6d218fcc707d6b2c3616b6cd24b948fd4825cfec ; affected 6.10.3 < 6.11
Linux · Linuxaffected 6.11 ; unaffected 0 < 6.11 ; unaffected 6.11.6 ≤ 6.11.* ; unaffected 6.12 ≤ *

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