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Fencer Intel
high 7.8

CVE-2024-56615 json

bpf: fix OOB devmap writes when deleting elements

published last yr. modified 4mo ago also EUVD-2024-53263

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

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

bpf: fix OOB devmap writes when deleting elements

Jordy reported issue against XSKMAP which also applies to DEVMAP - the index used for accessing map entry, due to being a signed integer, causes the OOB writes. Fix is simple as changing the type from int to u32, however, when compared to XSKMAP case, one more thing needs to be addressed.

When map is released from system via dev_map_free(), we iterate through all of the entries and an iterator variable is also an int, which implies OOB accesses. Again, change it to be u32.

Example splat below:

[ 160.724676] BUG: unable to handle page fault for address: ffffc8fc2c001000 [ 160.731662] #PF: supervisor read access in kernel mode [ 160.736876] #PF: error_code(0x0000) - not-present page [ 160.742095] PGD 0 P4D 0 [ 160.744678] Oops: Oops: 0000 [#1] PREEMPT SMP [ 160.749106] CPU: 1 UID: 0 PID: 520 Comm: kworker/u145:12 Not tainted 6.12.0-rc1+ #487 [ 160.757050] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019 [ 160.767642] Workqueue: events_unbound bpf_map_free_deferred [ 160.773308] RIP: 0010:dev_map_free+0x77/0x170 [ 160.777735] Code: 00 e8 fd 91 ed ff e8 b8 73 ed ff 41 83 7d 18 19 74 6e 41 8b 45 24 49 8b bd f8 00 00 00 31 db 85 c0 74 48 48 63 c3 48 8d 04 c7 <48> 8b 28 48 85 ed 74 30 48 8b 7d 18 48 85 ff 74 05 e8 b3 52 fa ff [ 160.796777] RSP: 0018:ffffc9000ee1fe38 EFLAGS: 00010202 [ 160.802086] RAX: ffffc8fc2c001000 RBX: 0000000080000000 RCX: 0000000000000024 [ 160.809331] RDX: 0000000000000000 RSI: 0000000000000024 RDI: ffffc9002c001000 [ 160.816576] RBP: 0000000000000000 R08: 0000000000000023 R09: 0000000000000001 [ 160.823823] R10: 0000000000000001 R11: 00000000000ee6b2 R12: dead000000000122 [ 160.831066] R13: ffff88810c928e00 R14: ffff8881002df405 R15: 0000000000000000 [ 160.838310] FS: 0000000000000000(0000) GS:ffff8897e0c40000(0000) knlGS:0000000000000000 [ 160.846528] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 160.852357] CR2: ffffc8fc2c001000 CR3: 0000000005c32006 CR4: 00000000007726f0 [ 160.859604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 160.866847] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 160.874092] PKRU: 55555554 [ 160.876847] Call Trace: [ 160.879338] <TASK> [ 160.881477] ? __die+0x20/0x60 [ 160.884586] ? page_fault_oops+0x15a/0x450 [ 160.888746] ? search_extable+0x22/0x30 [ 160.892647] ? search_bpf_extables+0x5f/0x80 [ 160.896988] ? exc_page_fault+0xa9/0x140 [ 160.900973] ? asm_exc_page_fault+0x22/0x30 [ 160.905232] ? dev_map_free+0x77/0x170 [ 160.909043] ? dev_map_free+0x58/0x170 [ 160.912857] bpf_map_free_deferred+0x51/0x90 [ 160.917196] process_one_work+0x142/0x370 [ 160.921272] worker_thread+0x29e/0x3b0 [ 160.925082] ? rescuer_thread+0x4b0/0x4b0 [ 160.929157] kthread+0xd4/0x110 [ 160.932355] ? kthread_park+0x80/0x80 [ 160.936079] ret_from_fork+0x2d/0x50 [ 160.943396] ? kthread_park+0x80/0x80 [ 160.950803] ret_from_fork_asm+0x11/0x20 [ 160.958482] </TASK>

Patch / fix

  • Linux Linux 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.66, 6.12.5, 6.13
  • linux Debian 12 6.1.123-1
  • linux Debian 14, Debian 13 6.12.5-1

debian advisories DEBIAN-CVE-2024-56615

  • linux Ubuntu 20.04 LTS 5.4.0-211.231
  • linux Ubuntu 22.04 LTS 5.15.0-135.146
  • linux Ubuntu 24.04 LTS 6.8.0-58.60
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1142.152
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1080.87
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1027.29
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1145.154
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1079.88

ubuntu advisories UBUNTU-CVE-2024-56615

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 9.2 E4S 5.14.0-284.122.1.el9_2
  • perf RHEL 9.2 E4S 5.14.0-284.122.1.el9_2
  • rtla RHEL 9.2 E4S 5.14.0-284.122.1.el9_2
  • bpftool RHEL 9.2 E4S 7.0.0-284.122.1.el9_2
  • kernel-64k RHEL 9.2 E4S 5.14.0-284.122.1.el9_2
  • kernel-core RHEL 9.2 E4S 5.14.0-284.122.1.el9_2
  • kernel-tools RHEL 9.2 E4S 5.14.0-284.122.1.el9_2
  • python3-perf RHEL 9.2 E4S 5.14.0-284.122.1.el9_2

red hat advisories RHSA-2025:10547RHSA-2025:10536RHSA-2025:9584

  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-livepatch-MICRO-6-0-RT_Update_5 Linux Micro 6.1, Linux Micro 6.0 1-1.1
  • kernel-source Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-default Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-kvmsmall Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-default-base Linux Micro 6.1, Linux Micro 6.0 6.4.0-24.1.21.4
  • kernel-livepatch-MICRO-6-0_Update_5 Linux Micro 6.1, Linux Micro 6.0 1-1.2

suse advisories SUSE-SU-2025:20166-1SUSE-SU-2025:20249-1SUSE-SU-2025:20165-1SUSE-SU-2025:20248-1SUSE-SU-2025:0565-1SUSE-SU-2025:0557-1

  • kernel Azure Linux 3.0 6.6.76.1-1
  • kernel CBL-Mariner 2.0 5.15.176.3-1

azure linux advisories AZL-55748AZL-55811

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-56615 updated cvss 6.7

kernel: bpf: fix OOB devmap writes when deleting elements

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +82 more Red Hat Enterprise Linux 10 kernel
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.74.1.el9_4
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.122.1.el9_2, rtla 5.14.0-284.122.1.el9_2, kernel-devel-matched 5.14.0-284.122.1.el9_2, kernel-64k-devel-matched 5.14.0-284.122.1.el9_2, kernel-debug-devel-matched 5.14.0-284.122.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.122.1.el9_2, +5 more
    fixed: vendor fix RHSA-2025:10547
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.74.1.el9_4, perf 5.14.0-427.74.1.el9_4, rtla 5.14.0-427.74.1.el9_4, kernel-devel-matched 5.14.0-427.74.1.el9_4, kernel-64k-devel-matched 5.14.0-427.74.1.el9_4, kernel-debug-devel-matched 5.14.0-427.74.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.122.1.el9_2, kernel 5.14.0-284.122.1.el9_2, kernel-64k 5.14.0-284.122.1.el9_2, kernel-core 5.14.0-284.122.1.el9_2, kernel-tools 5.14.0-284.122.1.el9_2, python3-perf 5.14.0-284.122.1.el9_2, +28 more
    fixed: vendor fix RHSA-2025:10547
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.74.1.el9_4, kernel 5.14.0-427.74.1.el9_4, kernel-64k 5.14.0-427.74.1.el9_4, kernel-core 5.14.0-427.74.1.el9_4, kernel-tools 5.14.0-427.74.1.el9_4, python3-perf 5.14.0-427.74.1.el9_4, +28 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-core 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-modules 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-debug-core 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-modules-core 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-debug-modules 5.14.0-284.122.1.rt14.407.el9_2, +4 more
    fixed: vendor fix RHSA-2025:10536
show 4 more
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.74.1.el9_4, kernel-rt-core 5.14.0-427.74.1.el9_4, kernel-rt-modules 5.14.0-427.74.1.el9_4, kernel-rt-debug-core 5.14.0-427.74.1.el9_4, kernel-rt-modules-core 5.14.0-427.74.1.el9_4, kernel-rt-debug-modules 5.14.0-427.74.1.el9_4, +4 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-kvm 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-core 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-modules 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-debug-kvm 5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-debug-core 5.14.0-284.122.1.rt14.407.el9_2, +6 more
    fixed: vendor fix RHSA-2025:10536
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.74.1.el9_4, kernel-rt-kvm 5.14.0-427.74.1.el9_4, kernel-rt-core 5.14.0-427.74.1.el9_4, kernel-rt-modules 5.14.0-427.74.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.74.1.el9_4, kernel-rt-debug-core 5.14.0-427.74.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-25-226-07 updated cvss 5.5

Siemens Third-Party Components in SINEC OS

  • Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) < 3.2
    affected: fixed in V3.2 support.industry.siemens.com
  • Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family < 3.2
    affected: fixed in V3.2
  • Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family < 3.2
    affected: fixed in V3.2 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.