media: pvrusb2: fix uaf in pvr2_context_set_notify

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2024-26875
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-04-17 11:15:09 UTC
Updated2026-05-12 12:16:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2_context_set_notify [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from ADP

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED6.4MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary6.4MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 ed8000e1e8e9684ab6c30cf2b526c0cea039929c git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 d29ed08964cec8b9729bc55c7bb23f679d7a18fb git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 ab896d93fd6a2cd1afeb034c3cc9226cb499209f git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 eb6e9dce979c08210ff7249e5e0eceb8991bfcd7 git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 3a1ec89708d2e57e2712f46241282961b1a7a475 git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 8e60b99f6b7ccb3badeb512f5eb613ad45904592 git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 40cd818fae875c424a8335009db33c7b5a07de3a git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 eaa410e05bdf562c90b23cdf2d9327f9c4625e16 git Not specified
CNA Linux Linux affected e5be15c63804e05b5a94197524023702a259e308 0a0b79ea55de8514e1750884e5fec77f9fdd01ee git Not specified
CNA Linux Linux affected 2.6.26 Not specified
CNA Linux Linux unaffected 2.6.26 semver Not specified
CNA Linux Linux unaffected 4.19.311 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.273 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.214 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.153 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.83 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.23 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.11 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.2 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Linux Linux Kernel affected e5be15c63804 ed8000e1e8e9 custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 d29ed08964ce custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 ab896d93fd6a custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 eb6e9dce979c custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 3a1ec89708d2 custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 8e60b99f6b7c custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 40cd818fae87 custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 eaa410e05bdf custom Not specified
ADP Linux Linux Kernel affected e5be15c63804 0a0b79ea55de custom Not specified
ADP Linux Linux Kernel affected 2.6.26 Not specified
ADP Linux Linux Kernel unaffected 2.6.26 custom Not specified
ADP Linux Linux Kernel unaffected 4.19.311 4.20 custom Not specified
ADP Linux Linux Kernel unaffected 5.4.273 5.5 custom Not specified
ADP Linux Linux Kernel unaffected 5.10.214 5.11 custom Not specified
ADP Linux Linux Kernel unaffected 5.15.153 5.16 custom Not specified
ADP Linux Linux Kernel unaffected 6.183 6.2 custom Not specified
ADP Linux Linux Kernel unaffected 6.6.23 6.7 custom Not specified
ADP Linux Linux Kernel unaffected 6.7.11 6.8 custom Not specified
ADP Linux Linux Kernel unaffected 6.8.2 6.9 custom Not specified
ADP Linux Linux Kernel unaffected 6.9 * custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report