smb: client: fix potential deadlock when releasing mids (Linux Linux)

CVE-2023-52757
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.19 % · percentile 8 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential deadlock when releasing mids All release_mid() callers seem to hold a reference of @mid so there is no need to call kref_put(&mid->refcount, __release_mid) under @server->mid_lock spinlock. If they don't, then an use-after-free bug would have occurred anyways. By getting rid of such spinlock also fixes a potential deadlock as shown below CPU 0 CPU 1 ------------------------------------------------------------------ cifs_demultiplex_thread() cifs_debug_data_proc_show() release_mid() spin_lock(&server->mid_lock); spin_lock(&cifs_tcp_ses_lock) spin_lock(&server->mid_lock) __release_mid() smb2_find_smb_tcon() spin_lock(&cifs_tcp_ses_lock) *deadlock*

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:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 7b71843fa7028475b052107664cbe120156a2cfc < 99f476e27aad5964ab13777d84fda67d1356dec1 ; affected 7b71843fa7028475b052107664cbe120156a2cfc < ce49569079a9d4cad26c0f1d4653382fd9a5ca7a ; affected 7b71843fa7028475b052107664cbe120156a2cfc < 9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29 ; affected 7b71843fa7028475b052107664cbe120156a2cfc < b9bb9607b1fc12fca51f5632da25b36975f599bf ; affected 7b71843fa7028475b052107664cbe120156a2cfc < c1a5962f1462b64fe7b69f20a4b6af8067bc2d26 ; affected 7b71843fa7028475b052107664cbe120156a2cfc < e6322fd177c6885a21dd4609dc5e5c973d1a2eb7
Linux · Linuxaffected 5.5 ; unaffected 0 < 5.5 ; unaffected 5.10.237 ≤ 5.10.* ; unaffected 5.15.181 ≤ 5.15.* ; unaffected 6.1.64 ≤ 6.1.* ; unaffected 6.5.13 ≤ 6.5.*

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