SB2015040808 - Ubuntu update for linux-lts-quantal
Published: April 8, 2015 Updated: October 31, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 vulnerabilities.
1) Input validation error (CVE-ID: CVE-2013-0228)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The xen_iret function in arch/x86/xen/xen-asm_32.S in the Linux kernel before 3.7.9 on 32-bit Xen paravirt_ops platforms does not properly handle an invalid value in the DS segment register, which allows guest OS users to gain guest OS privileges via a crafted application.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2013-0914)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.
3) Resource management error (CVE-ID: CVE-2013-1767)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option.
4) NULL pointer dereference (CVE-ID: CVE-2013-1792)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via crafted keyctl system calls that trigger keyring operations in simultaneous threads.
5) Cryptographic issues (CVE-ID: CVE-2013-2546)
CWE-ID: CWE-310 - Cryptographic Issues
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to cryptographic issues error within the crypto_shash_report() function in crypto/shash.c, within the crypto_rng_report() function in crypto/rng.c, within the crypto_pcomp_report() function in crypto/pcompress.c, within the crypto_report_cipher(), crypto_report_comp() and crypto_report_one() functions in crypto/crypto_user.c, within the crypto_blkcipher_report() function in crypto/blkcipher.c, within the crypto_ahash_report() function in crypto/ahash.c, within the crypto_aead_report() and crypto_nivaead_report() functions in crypto/aead.c, within the crypto_ablkcipher_report() and crypto_givcipher_report() functions in crypto/ablkcipher.c. A local user can gain access to sensitive information.
6) Cryptographic issues (CVE-ID: CVE-2013-2547)
CWE-ID: CWE-310 - Cryptographic Issues
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to cryptographic issues error within the crypto_shash_report() function in crypto/shash.c, within the crypto_rng_report() function in crypto/rng.c, within the crypto_pcomp_report() function in crypto/pcompress.c, within the crypto_report_cipher(), crypto_report_comp() and crypto_report_one() functions in crypto/crypto_user.c, within the crypto_blkcipher_report() function in crypto/blkcipher.c, within the crypto_ahash_report() function in crypto/ahash.c, within the crypto_aead_report() and crypto_nivaead_report() functions in crypto/aead.c, within the crypto_ablkcipher_report() and crypto_givcipher_report() functions in crypto/ablkcipher.c. A local user can gain access to sensitive information.
7) Cryptographic issues (CVE-ID: CVE-2013-2548)
CWE-ID: CWE-310 - Cryptographic Issues
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to cryptographic issues error within the crypto_shash_report() function in crypto/shash.c, within the crypto_rng_report() function in crypto/rng.c, within the crypto_pcomp_report() function in crypto/pcompress.c, within the crypto_report_cipher(), crypto_report_comp() and crypto_report_one() functions in crypto/crypto_user.c, within the crypto_blkcipher_report() function in crypto/blkcipher.c, within the crypto_ahash_report() function in crypto/ahash.c, within the crypto_aead_report() and crypto_nivaead_report() functions in crypto/aead.c, within the crypto_ablkcipher_report() and crypto_givcipher_report() functions in crypto/ablkcipher.c. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.