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In the Linux kernel, the following vulnerability has been resolved:
s390/ap: Fix crash in AP internal function modify_bitmap()
A system crash like this
Failing address: 200000cb7df6f000 TEID: 200000cb7df6f403 Fault in home space mode while using kernel ASCE. AS:00000002d71bc007 R3:00000003fe5b8007 S:000000011a446000 P:000000015660c13d Oops: 0038 ilc:3 [#1] PREEMPT SMP Modules linked in: mlx5_ib ... CPU: 8 PID: 7556 Comm: bash Not tainted 6.9.0-rc7 #8 Hardware name: IBM 3931 A01 704 (LPAR) Krnl PSW : 0704e00180000000 0000014b75e7b606 (ap_parse_bitmap_str+0x10e/0x1f8) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 Krnl GPRS: 0000000000000001 ffffffffffffffc0 0000000000000001 00000048f96b75d3 000000cb00000100 ffffffffffffffff ffffffffffffffff 000000cb7df6fce0 000000cb7df6fce0 00000000ffffffff 000000000000002b 00000048ffffffff 000003ff9b2dbc80 200000cb7df6fcd8 0000014bffffffc0 000000cb7df6fbc8 Krnl Code: 0000014b75e7b5fc: a7840047 brc 8,0000014b75e7b68a 0000014b75e7b600: 18b2 lr %r11,%r2 #0000014b75e7b602: a7f4000a brc 15,0000014b75e7b616 >0000014b75e7b606: eb22d00000e6 laog %r2,%r2,0(%r13) 0000014b75e7b60c: a7680001 lhi %r6,1 0000014b75e7b610: 187b lr %r7,%r11 0000014b75e7b612: 84960021 brxh %r9,%r6,0000014b75e7b654 0000014b75e7b616: 18e9 lr %r14,%r9 Call Trace: [<0000014b75e7b606>] ap_parse_bitmap_str+0x10e/0x1f8 ([<0000014b75e7b5dc>] ap_parse_bitmap_str+0xe4/0x1f8) [<0000014b75e7b758>] apmask_store+0x68/0x140 [<0000014b75679196>] kernfs_fop_write_iter+0x14e/0x1e8 [<0000014b75598524>] vfs_write+0x1b4/0x448 [<0000014b7559894c>] ksys_write+0x74/0x100 [<0000014b7618a440>] __do_syscall+0x268/0x328 [<0000014b761a3558>] system_call+0x70/0x98 INFO: lockdep is turned off. Last Breaking-Event-Address: [<0000014b75e7b636>] ap_parse_bitmap_str+0x13e/0x1f8 Kernel panic - not syncing: Fatal exception: panic_on_oops
occured when /sys/bus/ap/a[pq]mask was updated with a relative mask value (like +0x10-0x12,+60,-90) with one of the numeric values exceeding INT_MAX.
The fix is simple: use unsigned long values for the internal variables. The correct checks are already in place in the function but a simple int for the internal variables was used with the possibility to overflow.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 17, 2024 | Jun 25, 2024 |
| Oracle_linux | — | Upgrade kernel-uek | Aug 16, 2024 | Jun 25, 2024 |
| Suse | — | Upgrade dtb-sprdUpgrade kernel-rt-livepatch-develUpgrade kernel-defaultUpgrade ocfs2-kmp-defaultUpgrade dtb-renesasUpgrade kernel-default-base-rebuildUpgrade kernel-azureUpgrade kernel-devel-rtUpgrade kernel-syms-rtUpgrade dlm-kmp-defaultUpgrade kernel-debug-vdsoUpgrade dtb-nvidiaUpgrade reiserfs-kmp-azureUpgrade kernel-rt-extraUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt-develUpgrade kselftests-kmp-defaultUpgrade dtb-allwinnerUpgrade dtb-armUpgrade kernel-64kb-extraUpgrade kernel-default-manUpgrade gfs2-kmp-defaultUpgrade kernel-rt_debugUpgrade cluster-md-kmp-64kbUpgrade kernel-source-vanillaUpgrade kernel-docsUpgrade reiserfs-kmp-defaultUpgrade kernel-debug-develUpgrade ocfs2-kmp-azureUpgrade dtb-amdUpgrade kernel-rt-vdsoUpgrade dtb-rockchipUpgrade kernel-default-livepatch-develUpgrade cluster-md-kmp-defaultUpgrade kernel-obs-buildUpgrade dtb-socionextUpgrade dlm-kmp-rtUpgrade reiserfs-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-azure-vdsoUpgrade kselftests-kmp-rtUpgrade dtb-mediatekUpgrade dlm-kmp-azureUpgrade kernel-default-baseUpgrade kernel-azure-optionalUpgrade kernel-kvmsmall-develUpgrade kernel-kvmsmallUpgrade kernel-source-rtUpgrade dtb-broadcomUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-optionalUpgrade cluster-md-kmp-azureUpgrade dtb-hisiliconUpgrade dtb-freescaleUpgrade ocfs2-kmp-rtUpgrade kernel-syms-azureUpgrade kernel-default-vdsoUpgrade dtb-amazonUpgrade dtb-amlogicUpgrade dtb-alteraUpgrade dlm-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-azure-livepatch-develUpgrade gfs2-kmp-azureUpgrade gfs2-kmp-64kbUpgrade kernel-debugUpgrade dtb-lgUpgrade dtb-marvellUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-docs-htmlUpgrade kernel-azure-extraUpgrade kernel-zfcpdumpUpgrade kernel-rt-livepatchUpgrade kernel-debug-livepatch-develUpgrade kernel-64kbUpgrade kselftests-kmp-64kbUpgrade gfs2-kmp-rtUpgrade reiserfs-kmp-64kbUpgrade kernel-macrosUpgrade kernel-azure-develUpgrade kernel-64kb-develUpgrade dtb-caviumUpgrade dtb-exynosUpgrade dtb-apmUpgrade ocfs2-kmp-64kbUpgrade kernel-symsUpgrade kernel-obs-qaUpgrade kernel-develUpgrade kernel-default-develUpgrade kselftests-kmp-azureUpgrade kernel-azure-baseUpgrade kernel-rtUpgrade kernel-devel-azureUpgrade kernel-default-optionalUpgrade kernel-default-extraUpgrade kernel-sourceUpgrade dtb-appleUpgrade cluster-md-kmp-rtUpgrade kernel-default-livepatchUpgrade kernel-64kb-livepatch-develUpgrade dtb-xilinxUpgrade kernel-rt_debug-develUpgrade kernel-64kb-optionalUpgrade dtb-qcom | Jul 10, 2024 | Jun 25, 2024 |
| Ubuntu | — | Upgrade linux-image-oem-22.04aUpgrade linux-image-aws-lts-20.04Upgrade linux-image-5.4.0-1077-ibmUpgrade linux-image-6.8.0-45-generic-64kUpgrade linux-image-5.15.0-1064-nvidia-lowlatencyUpgrade linux-image-ibmUpgrade linux-image-aws-lts-22.04Upgrade linux-image-6.8.0-1014-azure-fdeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oracle-lts-18.04Upgrade linux-image-gkeopUpgrade linux-image-6.8.0-44-genericUpgrade linux-image-5.4.0-1042-iotUpgrade linux-image-generic-64kUpgrade linux-image-azure-fdeUpgrade linux-image-5.15.0-1072-azureUpgrade linux-image-4.15.0-233-genericUpgrade linux-image-gkeop-5.4Upgrade linux-image-oem-20.04bUpgrade linux-image-azure-lts-22.04Upgrade linux-image-oem-20.04cUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-5.4.0-192-genericUpgrade linux-image-4.15.0-1177-awsUpgrade linux-image-oem-22.04Upgrade linux-image-4.15.0-1160-kvmUpgrade linux-image-6.8.0-1013-nvidiaUpgrade linux-image-6.8.0-44-lowlatency-64kUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-6.8.0-44-generic-64kUpgrade linux-image-5.15.0-1066-kvmUpgrade linux-image-azureUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-6.8.0-1012-oracleUpgrade linux-image-5.15.0-1069-awsUpgrade linux-image-4.15.0-1185-azureUpgrade linux-image-aws-hweUpgrade linux-image-lowlatency-64kUpgrade linux-image-intel-iotgUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oem-22.04dUpgrade linux-image-azure-lts-18.04Upgrade linux-image-5.15.0-1072-azure-fdeUpgrade linux-image-oemUpgrade linux-image-5.4.0-1129-oracleUpgrade linux-image-6.8.0-45-genericUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-raspiUpgrade linux-image-intelUpgrade linux-image-5.15.0-121-lowlatency-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-5.4.0-1049-xilinx-zynqmpUpgrade linux-image-6.8.0-1013-nvidia-lowlatencyUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-22.04cUpgrade linux-image-gke-5.15Upgrade linux-image-nvidia-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-5.4.0-1097-gkeopUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.8.0-1015-awsUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-6.8.0-1012-oemUpgrade linux-image-6.8.0-1014-gcpUpgrade linux-image-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-genericUpgrade linux-image-5.4.0-1090-bluefieldUpgrade linux-image-5.15.0-121-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-5.4.0-1114-raspiUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-5.15.0-1064-intel-iotgUpgrade linux-image-6.8.0-1013-nvidia-64kUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-awsUpgrade linux-image-5.15.0-1066-gkeUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-6.8.0-1012-ibmUpgrade linux-image-5.4.0-1134-gcpUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-4.15.0-233-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1014-azureUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.4.0-1130-awsUpgrade linux-image-oem-osp1Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1011-raspiUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-1067-oracleUpgrade linux-image-oem-20.04Upgrade linux-image-5.15.0-1035-xilinx-zynqmpUpgrade linux-image-azure-cvmUpgrade linux-image-5.4.0-1135-azureUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1012-oracle-64kUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-44-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.4.0-192-lowlatencyUpgrade linux-image-4.15.0-1139-oracleUpgrade linux-image-generic-lpaeUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-kvmUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.15.0-121-generic-lpaeUpgrade linux-image-5.15.0-121-genericUpgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-1064-nvidiaUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1062-ibmUpgrade linux-image-5.15.0-1052-gkeopUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-lts-18.04Upgrade linux-image-aws-lts-18.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-5.15.0-121-lowlatencyUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-5.4.0-1118-kvmUpgrade linux-image-raspi2Upgrade linux-image-6.8.0-1010-gkeUpgrade linux-image-oem-22.04bUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-generic-hwe-16.04Upgrade linux-image-4.15.0-1170-gcpUpgrade linux-image-raspi-nolpaeUpgrade linux-image-5.4.0-192-generic-lpaeUpgrade linux-image-6.8.0-1013-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1068-gcpUpgrade linux-image-5.15.0-1062-raspiUpgrade linux-image-bluefield | Aug 9, 2024 | Jun 25, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 14, 2025 | Jun 25, 2024 |
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