vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-49900): Linux kernel vulnerabilities

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Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
Oct 21, 2024
Added
Dec 18, 2024
Modified
May 29, 2025

Description

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

jfs: Fix uninit-value access of new_ea in ea_buffer

syzbot reports that lzo1x_1_do_compress is using uninit-value:

=====================================================
BUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178

...

Uninit was stored to memory at:
ea_put fs/jfs/xattr.c:639 [inline]

...

Local variable ea_buf created at:
__jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662
__jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934

=====================================================

The reason is ea_buf->new_ea is not initialized properly.

Fix this by using memset to empty its content at the beginning
in ea_get().

Solution(s)

ubuntu-upgrade-linux-image-5-15-0-1039-xilinx-zynqmpubuntu-upgrade-linux-image-5-15-0-1056-gkeopubuntu-upgrade-linux-image-5-15-0-1066-ibmubuntu-upgrade-linux-image-5-15-0-1066-raspiubuntu-upgrade-linux-image-5-15-0-1068-nvidiaubuntu-upgrade-linux-image-5-15-0-1068-nvidia-lowlatencyubuntu-upgrade-linux-image-5-15-0-1070-gkeubuntu-upgrade-linux-image-5-15-0-1070-kvmubuntu-upgrade-linux-image-5-15-0-1071-intel-iotgubuntu-upgrade-linux-image-5-15-0-1071-oracleubuntu-upgrade-linux-image-5-15-0-1072-gcpubuntu-upgrade-linux-image-5-15-0-1073-awsubuntu-upgrade-linux-image-5-15-0-1078-azureubuntu-upgrade-linux-image-5-15-0-127-genericubuntu-upgrade-linux-image-5-15-0-127-generic-64kubuntu-upgrade-linux-image-5-15-0-127-generic-lpaeubuntu-upgrade-linux-image-5-15-0-127-lowlatencyubuntu-upgrade-linux-image-5-15-0-127-lowlatency-64kubuntu-upgrade-linux-image-5-4-0-1048-iotubuntu-upgrade-linux-image-5-4-0-1058-xilinx-zynqmpubuntu-upgrade-linux-image-5-4-0-1086-ibmubuntu-upgrade-linux-image-5-4-0-1099-bluefieldubuntu-upgrade-linux-image-5-4-0-1116-fipsubuntu-upgrade-linux-image-5-4-0-1127-kvmubuntu-upgrade-linux-image-5-4-0-1129-raspiubuntu-upgrade-linux-image-5-4-0-1138-oracleubuntu-upgrade-linux-image-5-4-0-1140-awsubuntu-upgrade-linux-image-5-4-0-1142-awsubuntu-upgrade-linux-image-5-4-0-1143-gcpubuntu-upgrade-linux-image-5-4-0-1145-azureubuntu-upgrade-linux-image-5-4-0-208-genericubuntu-upgrade-linux-image-5-4-0-208-generic-lpaeubuntu-upgrade-linux-image-5-4-0-208-lowlatencyubuntu-upgrade-linux-image-6-11-0-1005-realtimeubuntu-upgrade-linux-image-6-11-0-1008-raspiubuntu-upgrade-linux-image-6-11-0-1009-awsubuntu-upgrade-linux-image-6-11-0-1009-azureubuntu-upgrade-linux-image-6-11-0-1009-azure-fdeubuntu-upgrade-linux-image-6-11-0-1009-gcpubuntu-upgrade-linux-image-6-11-0-1010-lowlatencyubuntu-upgrade-linux-image-6-11-0-1010-lowlatency-64kubuntu-upgrade-linux-image-6-11-0-1011-oracleubuntu-upgrade-linux-image-6-11-0-1011-oracle-64kubuntu-upgrade-linux-image-6-11-0-1015-oemubuntu-upgrade-linux-image-6-11-0-18-genericubuntu-upgrade-linux-image-6-11-0-18-generic-64kubuntu-upgrade-linux-image-6-8-0-1006-gkeopubuntu-upgrade-linux-image-6-8-0-1014-azure-nvidiaubuntu-upgrade-linux-image-6-8-0-1019-gkeubuntu-upgrade-linux-image-6-8-0-1019-raspiubuntu-upgrade-linux-image-6-8-0-1020-oracleubuntu-upgrade-linux-image-6-8-0-1020-oracle-64kubuntu-upgrade-linux-image-6-8-0-1022-ibmubuntu-upgrade-linux-image-6-8-0-1022-nvidiaubuntu-upgrade-linux-image-6-8-0-1022-nvidia-64kubuntu-upgrade-linux-image-6-8-0-1022-nvidia-lowlatencyubuntu-upgrade-linux-image-6-8-0-1022-nvidia-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-1023-awsubuntu-upgrade-linux-image-6-8-0-1024-gcpubuntu-upgrade-linux-image-6-8-0-1024-gcp-64kubuntu-upgrade-linux-image-6-8-0-1024-oemubuntu-upgrade-linux-image-6-8-0-1025-azureubuntu-upgrade-linux-image-6-8-0-1025-azure-fdeubuntu-upgrade-linux-image-6-8-0-54-genericubuntu-upgrade-linux-image-6-8-0-54-generic-64kubuntu-upgrade-linux-image-6-8-0-54-lowlatencyubuntu-upgrade-linux-image-6-8-0-54-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-57-genericubuntu-upgrade-linux-image-6-8-0-57-generic-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-aws-lts-22-04ubuntu-upgrade-linux-image-aws-lts-24-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-cvmubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-azure-fde-lts-24-04ubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-azure-lts-22-04ubuntu-upgrade-linux-image-azure-lts-24-04ubuntu-upgrade-linux-image-azure-nvidiaubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-fipsubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-64kubuntu-upgrade-linux-image-gcp-64k-lts-24-04ubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-gcp-lts-22-04ubuntu-upgrade-linux-image-gcp-lts-24-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-64k-hwe-22-04ubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-22-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-15ubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-15ubuntu-upgrade-linux-image-gkeop-6-8ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-classicubuntu-upgrade-linux-image-ibm-lts-20-04ubuntu-upgrade-linux-image-ibm-lts-24-04ubuntu-upgrade-linux-image-intelubuntu-upgrade-linux-image-intel-iotgubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04ubuntu-upgrade-linux-image-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