Amazon Linux 2 Security Advisory: ALASKERNEL-5.15-2024-036
Advisory Release Date: 2024-02-01 20:10 Pacific
Advisory Updated Date: 2024-12-05 01:00 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
2024-12-05: CVE-2023-52683 was added to this advisory.
2024-12-05: CVE-2023-52693 was added to this advisory.
2024-12-05: CVE-2023-52679 was added to this advisory.
2024-09-12: CVE-2023-52675 was added to this advisory.
2024-09-12: CVE-2024-35840 was added to this advisory.
2024-07-03: CVE-2023-52610 was added to this advisory.
2024-07-03: CVE-2024-26589 was added to this advisory.
2024-07-03: CVE-2023-52458 was added to this advisory.
2024-07-03: CVE-2024-26631 was added to this advisory.
2024-07-03: CVE-2023-52612 was added to this advisory.
2024-07-03: CVE-2024-26598 was added to this advisory.
2024-07-03: CVE-2024-26633 was added to this advisory.
2024-06-06: CVE-2023-52698 was added to this advisory.
2024-05-09: CVE-2024-26586 was added to this advisory.
2024-04-25: CVE-2023-52462 was added to this advisory.
2024-04-25: CVE-2024-26591 was added to this advisory.
2024-04-25: CVE-2023-52467 was added to this advisory.
2024-03-27: CVE-2023-52439 was added to this advisory.
2024-03-13: CVE-2023-52463 was added to this advisory.
2024-02-15: CVE-2024-1085 was added to this advisory.
A flaw has been found in Xen. An unprivileged guest can cause Denial of Service (DoS) of the host by sending network packets to the backend, causing the backend to crash. (CVE-2023-46838)
In the Linux kernel, the following vulnerability has been resolved:
uio: Fix use-after-free in uio_open
core-1 core-2
-------------------------------------------------------
uio_unregister_device uio_open
idev = idr_find()
device_unregister(&idev->dev)
put_device(&idev->dev)
uio_device_release
get_device(&idev->dev)
kfree(idev)
uio_free_minor(minor)
uio_release
put_device(&idev->dev)
kfree(idev)
-------------------------------------------------------
In the core-1 uio_unregister_device(), the device_unregister will kfree
idev when the idev->dev kobject ref is 1. But after core-1
device_unregister, put_device and before doing kfree, the core-2 may
get_device. Then:
1. After core-1 kfree idev, the core-2 will do use-after-free for idev.
2. When core-2 do uio_release and put_device, the idev will be double
freed.
To address this issue, we can get idev atomic & inc idev reference with
minor_lock. (CVE-2023-52439)
In the Linux kernel, the following vulnerability has been resolved:
block: add check that partition length needs to be aligned with block size
Before calling add partition or resize partition, there is no check
on whether the length is aligned with the logical block size.
If the logical block size of the disk is larger than 512 bytes,
then the partition size maybe not the multiple of the logical block size,
and when the last sector is read, bio_truncate() will adjust the bio size,
resulting in an IO error if the size of the read command is smaller than
the logical block size.If integrity data is supported, this will also
result in a null pointer dereference when calling bio_integrity_free. (CVE-2023-52458)
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix check for attempt to corrupt spilled pointer (CVE-2023-52462)
In the Linux kernel, the following vulnerability has been resolved: efivarfs: force RO when remounting if SetVariable is not supported If SetVariable at runtime is not supported by the firmware we never assign a callback for that function. At the same time mount the efivarfs as RO so no one can call that. However, we never check the permission flags when someone remounts the filesystem as RW. As a result this leads to a crash (CVE-2023-52463)
In the Linux kernel, the following vulnerability has been resolved:
mfd: syscon: Fix null pointer dereference in of_syscon_register()
kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. (CVE-2023-52467)
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_ct: fix skb leak and crash on ooo frags (CVE-2023-52610)
In the Linux kernel, the following vulnerability has been resolved:
crypto: scomp - fix req->dst buffer overflow (CVE-2023-52612)
In the Linux kernel, the following vulnerability has been resolved:
powerpc/imc-pmu: Add a null pointer check in update_events_in_group() (CVE-2023-52675)
In the Linux kernel, the following vulnerability has been resolved:
of: Fix double free in of_parse_phandle_with_args_map (CVE-2023-52679)
In the Linux kernel, the following vulnerability has been resolved:
ACPI: LPIT: Avoid u32 multiplication overflow (CVE-2023-52683)
In the Linux kernel, the following vulnerability has been resolved:
ACPI: video: check for error while searching for backlight device parent (CVE-2023-52693)
In the Linux kernel, the following vulnerability has been resolved:
calipso: fix memory leak in netlbl_calipso_add_pass() (CVE-2023-52698)
An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an attacker to achieve out-of-bounds access. (CVE-2023-6040)
A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may allow an attacker using this library to cause a denial of service problem due to a missing check at a function return. (CVE-2023-6915)
An out-of-bounds memory read flaw was found in receive_encrypted_standard in fs/smb/client/smb2ops.c in the SMB Client sub-component in the Linux Kernel. This issue occurs due to integer underflow on the memcpy length, leading to a denial of service. (CVE-2024-0565)
An out-of-bounds memory write flaw was found in the Linux kernel's Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2024-0646)
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
The nft_setelem_catchall_deactivate() function checks whether the catch-all set element is active in the current generation instead of the next generation before freeing it, but only flags it inactive in the next generation, making it possible to free the element multiple times, leading to a double free vulnerability.
We recommend upgrading past commit b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7. (CVE-2024-1085)
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix stack corruption When tc filters are first added to a net device, the corresponding local port gets bound to an ACL group in the device. (CVE-2024-26586)
In the Linux kernel, the following vulnerability has been resolved:
bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
check_flow_keys_access() results in out of bounds access .
For PTR_TO_FLOW_KEYS, check_flow_keys_access() only uses fixed off
for validation. However, variable offset ptr alu is not prohibited
for this ptr kind. So the variable offset is not checked. (CVE-2024-26589)
bpf: Fix re-attachment branch in bpf_tracing_prog_attach
The following case can cause a crash due to missing attach_btf:
1) load rawtp program
2) load fentry program with rawtp as target_fd
3) create tracing link for fentry program with target_fd = 0
4) repeat 3 (CVE-2024-26591)
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache (CVE-2024-26598)
In the Linux kernel, the following vulnerability has been resolved:
ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work (CVE-2024-26631)
In the Linux kernel, the following vulnerability has been resolved:
ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim() (CVE-2024-26633)
In the Linux kernel, the following vulnerability has been resolved:
mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect() (CVE-2024-35840)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 - Kernel-5.15 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
aarch64:
kernel-5.15.148-97.158.amzn2.aarch64
kernel-headers-5.15.148-97.158.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.15.148-97.158.amzn2.aarch64
perf-5.15.148-97.158.amzn2.aarch64
perf-debuginfo-5.15.148-97.158.amzn2.aarch64
python-perf-5.15.148-97.158.amzn2.aarch64
python-perf-debuginfo-5.15.148-97.158.amzn2.aarch64
kernel-tools-5.15.148-97.158.amzn2.aarch64
kernel-tools-devel-5.15.148-97.158.amzn2.aarch64
kernel-tools-debuginfo-5.15.148-97.158.amzn2.aarch64
bpftool-5.15.148-97.158.amzn2.aarch64
bpftool-debuginfo-5.15.148-97.158.amzn2.aarch64
kernel-devel-5.15.148-97.158.amzn2.aarch64
kernel-debuginfo-5.15.148-97.158.amzn2.aarch64
kernel-livepatch-5.15.148-97.158-1.0-0.amzn2.aarch64
i686:
kernel-headers-5.15.148-97.158.amzn2.i686
src:
kernel-5.15.148-97.158.amzn2.src
x86_64:
kernel-5.15.148-97.158.amzn2.x86_64
kernel-headers-5.15.148-97.158.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.15.148-97.158.amzn2.x86_64
perf-5.15.148-97.158.amzn2.x86_64
perf-debuginfo-5.15.148-97.158.amzn2.x86_64
python-perf-5.15.148-97.158.amzn2.x86_64
python-perf-debuginfo-5.15.148-97.158.amzn2.x86_64
kernel-tools-5.15.148-97.158.amzn2.x86_64
kernel-tools-devel-5.15.148-97.158.amzn2.x86_64
kernel-tools-debuginfo-5.15.148-97.158.amzn2.x86_64
bpftool-5.15.148-97.158.amzn2.x86_64
bpftool-debuginfo-5.15.148-97.158.amzn2.x86_64
kernel-devel-5.15.148-97.158.amzn2.x86_64
kernel-debuginfo-5.15.148-97.158.amzn2.x86_64
kernel-livepatch-5.15.148-97.158-1.0-0.amzn2.x86_64