Vulnerability · Published Feb 23, 2024 · Assigned by Linux

CVE-2024-26595mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 86.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path When calling mlxsw_sp_acl_tcam_region_destroy() from an error path after failing to attach the region to an ACL group, we hit a NULL pointer dereference upon 'region->group->tcam' [1]. Fix by retrieving the 'tcam' pointer using mlxsw_sp_acl_to_tcam(). [1] BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] RIP: 0010:mlxsw_sp_acl_tcam_region_destroy+0xa0/0xd0 [...] Call Trace: mlxsw_sp_acl_tcam_vchunk_get+0x88b/0xa20 mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0 mlxsw_sp_acl_rule_add+0x47/0x240 mlxsw_sp_flower_replace+0x1a9/0x1d0 tc_setup_cb_add+0xdc/0x1c0 fl_hw_replace_filter+0x146/0x1f0 fl_change+0xc17/0x1360 tc_new_tfilter+0x472/0xb90 rtnetlink_rcv_msg+0x313/0x3b0 netlink_rcv_skb+0x58/0x100 netlink_unicast+0x244/0x390 netlink_sendmsg+0x1e4/0x440 ____sys_sendmsg+0x164/0x260 ___sys_sendmsg+0x9a/0xe0 __sys_sendmsg+0x7a/0xc0 do_syscall_64+0x40/0xe0 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-abi-stablelists4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-core4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-cross-headers4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-core4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-modules4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-doc4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-headers4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-modules4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-modules-extra4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-rt4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-core4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-core4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-kvm4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-devel4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-kvm4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-modules4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-tools4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-tools-libs4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8perf4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8python3-perf4.18.0-553.22.1.el8_10ALSA-2024:7000
Debian:12linux6.1.123-1DEBIAN-CVE-2024-26595
Debian:13linux6.6.15-1DEBIAN-CVE-2024-26595
Debian:14linux6.6.15-1DEBIAN-CVE-2024-26595
Rocky Linux:8kernel0:4.18.0-553.22.1.el8_10RLSA-2024:7000
Rocky Linux:8kernel-rt0:4.18.0-553.22.1.rt7.363.el8_10RLSA-2024:7001
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1022.23~22.04.1UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1022.24~22.04.1UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-41.41~22.04.2UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-41.41.1~22.04.1UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1021.22UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1024.25UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1024.24~22.04.1UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-riscv-6.56.5.0-40.40.1~22.04.1UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1015.16~22.04.1UBUNTU-CVE-2024-26595
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2024-26595

Affected products (as reported)

VendorProductVersions
Linux Linux 22a677661f5624539d394f681276171f92d714df – before 75fa2d8b3c0175b519c99ace54ab8474cfd0077e22a677661f5624539d394f681276171f92d714df – before 817840d125a370626895df269c50c923b79b0a3922a677661f5624539d394f681276171f92d714df – before d0a1efe417c97a1e9b914056ee6b86f1ef75fe1f22a677661f5624539d394f681276171f92d714df – before efeb7dfea8ee10cdec11b6b6ba4e405edbe75809
Linux Linux 4.11

References