medium 4.7

CVE-2024-26859 json

net/bnx2x: Prevent access to a freed page in page_pool

published 2024-04-17 2 y ago modified 2026-10-15 25 d ago also EUVD-2024-24121

cvss: 4.7; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits: 0; none known

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

Fix race condition leading to system crash during EEH error handling

During EEH error recovery, the bnx2x driver's transmit timeout logic could cause a race condition when handling reset tasks. The bnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(), which ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload() SGEs are freed using bnx2x_free_rx_sge_range(). However, this could overlap with the EEH driver's attempt to reset the device using bnx2x_io_slot_reset(), which also tries to free SGEs. This race condition can result in system crashes due to accessing freed memory locations in bnx2x_free_rx_sge()

799 static inline void bnx2x_free_rx_sge(struct bnx2x *bp, 800 struct bnx2x_fastpath *fp, u16 index) 801 { 802 struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; 803 struct page *page = sw_buf->page; .... where sw_buf was set to NULL after the call to dma_unmap_page() by the preceding thread.

EEH: Beginning: 'slot_reset' PCI 0011:01:00.0#10000: EEH: Invoking bnx2x->slot_reset() bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing... bnx2x 0011:01:00.0: enabling device (0140 -> 0142) bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --> driver unload Kernel attempted to read user page (0) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000000 Faulting instruction address: 0xc0080000025065fc Oops: Kernel access of bad area, sig: 11 [#1] ..... Call Trace: [c000000003c67a20] [c00800000250658c] bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable) [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0 [c000000003c67b60] [c000000000052130] eeh_pe_report+0x180/0x550 [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60 [c000000003c67d50] [c000000000053a84] eeh_event_handler+0xf4/0x170 [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0 [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64

To solve this issue, we need to verify page pool allocations before freeing.

Patch / fix

fixed in 2 distros 6 links 9

Linux Linux 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1.1

debian ubuntu red hat suse almalinux rocky linux

linux Debian 12 6.1.85-1
linux Debian 14, Debian 13 6.7.12-1

debian advisories DEBIAN-CVE-2024-26859

linux Ubuntu 20.04 LTS 5.4.0-189.209
linux Ubuntu 22.04 LTS 5.15.0-112.122
linux Ubuntu 24.04 LTS 6.8.0-35.35
linux-aws Ubuntu 20.04 LTS 5.4.0-1128.138
linux-aws Ubuntu 22.04 LTS 5.15.0-1063.69
linux-aws Ubuntu 24.04 LTS 6.8.0-1009.9
linux-gcp Ubuntu 20.04 LTS 5.4.0-1132.141
linux-gcp Ubuntu 22.04 LTS 5.15.0-1062.70

ubuntu advisories UBUNTU-CVE-2024-26859

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 8 4.18.0-553.8.1.el8_10
perf RHEL 8 4.18.0-553.8.1.el8_10
bpftool RHEL 8 4.18.0-553.8.1.el8_10
kernel-core RHEL 8 4.18.0-553.8.1.el8_10
kernel-tools RHEL 8 4.18.0-553.8.1.el8_10
python3-perf RHEL 8 4.18.0-553.8.1.el8_10
kernel-modules RHEL 8 4.18.0-553.8.1.el8_10
kernel-zfcpdump RHEL 8 4.18.0-553.8.1.el8_10

red hat advisories RHSA-2024:4211 RHSA-2024:4352

dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.68.1
kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.68.1
kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.68.1
kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.68.1
kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.68.1
kernel-default SLE Workstation Extension 15 SP5, SLE Module for Legacy 15 SP5, SLE Module for Basesystem 15 SP5 +4 more 5.14.21-150500.55.68.1
kernel-kvmsmall openSUSE Leap 15.5 5.14.21-150500.55.68.1
kernel-zfcpdump SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.68.1

suse advisories SUSE-SU-2024:2190-1 SUSE-SU-2024:2019-1 SUSE-SU-2024:2008-1 SUSE-SU-2024:1870-1 SUSE-SU-2024:1646-1 SUSE-SU-2024:1643-1

kernel-rt AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-kvm AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-core AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-modules AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-debug-kvm AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-debug-core AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.8.1.rt7.349.el8_10

almalinux advisories ALSA-2024:4352 ALSA-2024:4211

kernel-rt Rocky Linux 8 4.18.0-553.8.1.rt7.349.el8_10
kernel Rocky Linux 8 4.18.0-553.8.1.el8_10

rocky linux advisories RLSA-2024:4352 RLSA-2024:4211

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-2024-26859 updated 2026-11-06 cvss 4.1

kernel: net/bnx2x: Prevent access to a freed page in page_pool

Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
affected: no fix available “Fix deferred”
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.8.1.el8_10, kernel 4.18.0-553.8.1.el8_10, bpftool 4.18.0-553.8.1.el8_10, kernel-core 4.18.0-553.8.1.el8_10, kernel-tools 4.18.0-553.8.1.el8_10, python3-perf 4.18.0-553.8.1.el8_10, +15 more Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.8.1.el8_10
fixed: vendor fix RHSA-2024:4211
Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, +4 more Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules-extra 4.18.0-553.8.1.rt7.349.el8_10, +2 more
fixed: vendor fix RHSA-2024:4352
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux BaseOS (v. 8) kernel-headers 4.18.0-553.8.1.el8_10, kernel-cross-headers 4.18.0-553.8.1.el8_10
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-24-102-01 updated 2026-05-14 cvss 5.5

Siemens SIMATIC S7-1500 TM MFP

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
affected: mitigation, no fix available

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: partial
Assessed: 2 y ago (2024-04-23)

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.7	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Linux Linux
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

Technology feeds

Linux kernel rss critical rss

References

git.kernel.org /stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9
mailing-list, patch
git.kernel.org /stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4
mailing-list, patch
git.kernel.org /stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699
mailing-list, patch
git.kernel.org /stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598
mailing-list, patch
git.kernel.org /stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c
mailing-list, patch
git.kernel.org /stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb
mailing-list, patch
git.kernel.org /stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68
mailing-list, patch
git.kernel.org /stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec
mailing-list, patch
git.kernel.org /stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d
mailing-list, patch
lists.debian.org /debian-lts-announce/2024/06/msg00017.html
mailing-list
lists.debian.org /debian-lts-announce/2024/06/msg00020.html
mailing-list
cert-portal.siemens.com /productcert/html/ssa-265688.html

Sources

CVE List CVE-2024-26859
NVD CVE-2024-26859

Fencer Vulns 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.

Summary